Create a free account to navigate family trees, view ancestors, and discover connections.

First name (Optional)

Middle name (Optional)

Last name* (Required)

Advanced Search Options

Exact match

(Show only records that exactly match the information entered.)

Birth year (Optional)

Death year (Optional)

Birth location (Optional)

Death location (Optional)

O'Sullivan Family Genealogy & History

Discover the Global Legacy of the O'Sullivan Surname

The O'Sullivan surname is deeply embedded in Irish history, originating from the southwestern counties of Ireland, notably Tipperary and Kerry. The name O'Sullivan, or Ó Súilleabháin in Irish, signifies "descendant of Súileabhán," with potential meanings such as "little dark-eyed one" or "hawk-eyed," reflecting the rich linguistic heritage of the region. As the third most common surname in Ireland, O'Sullivan carries significant cultural weight, representing a lineage that has been integral to the Irish historical narrative.

Over the centuries, the O'Sullivan family tree has expanded far beyond its Irish roots. Initially concentrated in Ireland, the surname spread through the British Isles and beyond, particularly following the Anglo-Norman invasion. The 18th and 19th centuries witnessed further dispersion, with O'Sullivans establishing themselves in England and other parts of the United Kingdom. This movement continued into the 20th century, with the O'Sullivan name appearing in North America and Australia, illustrating the adaptability and resilience of the family across different cultures and environments.

YourRoots data corroborates the longstanding presence of the O'Sullivan surname in Ireland, tracing its origins back to the early 16th century. This data supports the historical narrative of the O'Sullivan genealogy, highlighting the family's growth and persistence through challenges over the centuries. By the 17th century, the surname had become a significant part of Ireland's cultural tapestry, with records showing its continued expansion across various regions and eventually overseas.

Today, O'Sullivan genealogy records offer a rich field for exploration, with YourRoots providing valuable insights into the familial connections that span continents. The global distribution of the O'Sullivan surname underscores the enduring legacy of this family, offering a fascinating journey for those delving into the O'Sullivan family tree.

← START A NEW SEARCH

Find the O'Sullivan Family Tree

Search more O'Sullivan trees & genealogy records

Records

Search more trees & records for
O'Sullivan for free

SIGNUP

Tracing Your O'Sullivan Family Lineage

Origin of the O'Sullivan Family: Where does the O'Sullivan surname come from?

The O'Sullivan surname traces its earliest known appearance to Ireland, establishing its roots in the genealogical landscape during the early 16th century. This connection to Ireland signifies the beginnings of the O'Sullivan family tree, marking a pivotal point in their ancestral history. As families began to form and expand, the surname quickly became associated with the rich cultural tapestry of Irish heritage.

Genealogy and Early Family History of O'Sullivan

Throughout its early centuries, the O'Sullivan family spread predominantly throughout Ireland, particularly in regions known for their historical significance and cultural identity. From the 16th century onward, lines of the O'Sullivan family began to branch out, establishing connections with other families and creating a diverse tapestry of relationships and lineage. This growth laid the groundwork for the extensive family trees that would emerge in subsequent generations.

During the 17th century, the O'Sullivan surname continued to solidify its presence in Ireland, with family lines extending into various counties and regions. As families navigated the challenges of their time, they adapted and thrived, ensuring their lineage persisted. This adaptability not only enriched their family heritage but also contributed to the development of the O'Sullivan name as a prominent fixture in Irish genealogy.

Tracing the O'Sullivan Family Tree Through the Centuries

The expansion of the O'Sullivan surname across different regions became evident in the 18th century, as families began to migrate beyond Ireland's borders. This migration led to the establishment of O'Sullivan lines in England and various other parts of the United Kingdom, creating a broader familial network. By the 19th century, the O'Sullivan name had further extended its reach, with branches appearing in North America and Australia, reflecting the global movement of families seeking new opportunities.

In the 20th century, the O'Sullivan surname continued to flourish, marking its presence in diverse regions around the world. The family tree of the O'Sullivan lineage became increasingly intricate, with descendants tracing their roots back to the original Irish forebears. This ongoing expansion highlights the resilience and adaptability of the O'Sullivan families, as they maintained their heritage while embracing new cultures and experiences.

Where to Find O'Sullivan Genealogy Records Today

In the modern centuries, the global spread of the O'Sullivan surname is significant, with many descendants actively exploring their ancestry. Regions such as North America, Australia, and parts of Europe host a vibrant community of individuals searching for their O'Sullivan lineage. For those interested in connecting their own family tree to this rich history, the YourRoots database offers a wealth of genealogy records to aid in uncovering

Famous People with O'Sullivan (and Their Family Tree)

Ronnie O'Sullivan

Ronnie O'Sullivan, born on 5 December 1975, is an iconic English snooker player renowned for his exceptional talent and record-breaking achievements. He has clinched the World Snooker Championship seven times, sharing the modern-era record with Stephen Hendry, and holds the most Triple Crown titles with 23. O'Sullivan is celebrated for a record 41 ranking titles and is the youngest player to win a ranking event and the Masters. Known for his speed, he holds the Guinness World Record for the fastest maximum break. Despite facing personal challenges, his career longevity and contributions as a pundit and author further cement his legacy in the snooker world.

Maureen O'Sullivan

Maureen O'Sullivan was a renowned Irish actress best known for her role as Jane in the Tarzan films alongside Johnny Weissmuller. Her career, spanning over 50 years, included collaborations with stars like Laurence Olivier, Greta Garbo, and Woody Allen. O'Sullivan's filmography features classics such as "The Thin Man," "Anna Karenina," and "Pride and Prejudice." In 2020, she was celebrated as one of Ireland's greatest film actors by The Irish Times. Her contributions to cinema earned her a star on the Hollywood Walk of Fame and the George Eastman Award in 1982.

Born in Boyle, County Roscommon, Ireland, on May 17, 1911, Maureen O'Sullivan was the daughter of Mary Eva Lovatt and Charles Joseph O'Sullivan, an officer in the Connaught Rangers. Her education included time at a convent school in Dublin and the Convent of the Sacred Heart in England, where she was classmates with Vivien Leigh. O'Sullivan was married to John Farrow, with whom she had seven children, including actress Mia Farrow.

Gilbert O'Sullivan

Gilbert O'Sullivan, born Raymond Edward O'Sullivan on December 1, 1946, in Waterford, Ireland, is a renowned Irish singer-songwriter celebrated for his hits in the early 1970s, including "Alone Again (Naturally)", "Clair", and "Get Down". His music is distinguished by a percussive piano style and clever lyrics. O'Sullivan's career boasts 16 top 40 hits and six No. 1 songs, earning him three Ivor Novello Awards, including "Songwriter of the Year" in 1973. He has recorded 19 studio albums, with Record Mirror naming him the top UK male singer of 1972.

O'Sullivan was born into a working-class family in Waterford, Ireland, one of six children. His mother, May, ran a sweet shop, and his father worked as a butcher for Clover Meats. The family moved to England for better opportunities, first to Battersea and then settling in Swindon. O'Sullivan's father died two years after their relocation to Swindon, leaving a minimal impact on his life as O'Sullivan described their relationship as distant.

Richard O'Sullivan

Richard O'Sullivan, born on May 7, 1944, is a renowned English comedy actor celebrated for his roles as Robin Tripp in "Man About the House" and "Robin's Nest," and as the title character in "Dick Turpin." His career spans decades, beginning with child roles in films like "The Yellow Balloon" and "The Stranger's Hand." O'Sullivan gained fame through sitcoms, starring in "Doctor at Large," and "Me and My Girl." His contributions to television comedy, including writing a recipe book and a theme tune for "Robin's Nest," highlight his versatile talent.

Richard was born to John and Ellen O'Sullivan (née Fleming) in Chiswick, growing up with his younger brother. His early education was at St John the Evangelist's RC Primary School in Brentford, Middlesex.

Camille O'Sullivan

Camille O'Sullivan is a renowned Irish singer, musician, and actress, celebrated for her dramatic musical style and captivating performances. She has gained acclaim for her covers of iconic artists like Radiohead, Tom Waits, David Bowie, and Nick Cave. Her career highlights include a standout performance at the Edinburgh Fringe Festival, a role in Stephen Frears' film "Mrs Henderson Presents," and a sold-out show at the Edinburgh Fringe. O'Sullivan's talents have been showcased internationally, with tours across Sydney, Toronto, New York, and the UK, solidifying her status as a dynamic performer.

Born in London, Camille O'Sullivan has a rich cultural heritage with an Irish father, Denis O'Sullivan, from Cork, and a French mother, Marie-José, from Bordeaux. Her father, Denis, was a notable Formula Two racing driver and a world champion sailor, representing Ireland in various prestigious sailing competitions. Camille's upbringing in County Cork and her family's diverse background have significantly influenced her artistic journey.

O'Sullivan Surname Meaning, Origin, and History

The surname O'Sullivan is of Irish origin, primarily associated with the southwestern regions of Ireland, including County Tipperary and Kerry. It is the third most common surname in Ireland, with its roots traced back to a name meaning "descendant of Suilebhan," which is interpreted as "little dark-eyed one." The name O'Sullivan is an anglicization of the Irish "Ó Súilleabháin," and it has various spelling variants.

Where to Find Genealogy Records for O'Sullivan

We’ve analyzed YourRoots tree and records data to uncover where genealogists are finding key sources such as census, birth certificates, marriage records, and obituaries for the O'Sullivan family. Explore our most popular genealogy record sources for the O'Sullivan surname to learn more.