Henrietta "Hetty" Howland Robinson Green, born on November 21, 1834, was a pioneering American businesswoman and financier. Often referred to as "the richest woman in America" during the Gilded Age, she gained the nickname "Queen of Wall Street" due to her willingness to offer low-rate loans during financial panics, amassing a fortune in a male-dominated industry. Despite her success as a highly disciplined investor, she rejected New York City high society and business partnerships, earning a reputation for eccentricity. Green's refusal to engage in conspicuous consumption and her frugal lifestyle led her to be labeled sensationally as the "Witch of Wall Street" and even dubbed the "greatest miser" by the Guinness Book of World Records. Her early years were marked by a close relationship with her father and a strong business acumen, which she developed by emulating her family's successful business practices. Rejecting societal norms for women, especially wealthy heiresses, she showed little interest in finding a spouse and instead focused on her passion for finance and investments. Despite her unconventional behavior, Green's financial acumen and disciplined approach to investing cemented her place as a pioneering figure in the history of American finance.

Hetty Carr Cary, born on May 15, 1836, was a prominent figure in the American Civil War era. She gained recognition for her role in creating the first three battle flags of the Confederacy, alongside her sister and cousin. Her lineage connected her to influential families like the Jeffersons and Randolphs of Virginia, and she was a direct descendant of Pocahontas. Known for her remarkable beauty, Hetty was an ardent supporter of the South, even displaying a smuggled Confederate flag to passing Union soldiers, earning admiration for her beauty and defiance. Together with her sister, she engaged in smuggling activities for Confederate troops and eventually relocated to Richmond, where they were known as the Cary Invincibles. Hetty's life took a tragic turn when she married Confederate General John Pegram, who was killed in battle just 18 days after their wedding. The elite of Confederate society, including President Jefferson Davis, attended their wedding, which was followed by John's untimely death. Despite the turmoil, Hetty's strength and resilience endured, leaving a lasting legacy in American history.

Hetty Margarete Johnston is a prominent figure in Australia, best known as the founder of Bravehearts Inc., a renowned organization dedicated to advocating for improved child protection. Born on September 27, 1958, Johnston is a passionate lobbyist, actively championing action against paedophilia in various spheres such as media, families, schools, and the broader community. Her advocacy efforts have been further solidified through the publication of her book, "In the Best Interests of the Child." In the realm of politics, Johnston has made significant strides, contesting in various elections such as the federal elections in 1996 and 2004, as well as the 2019 federal election. Additionally, she also vied for positions in the Queensland state elections and ran for Mayor of Logan City in 2015. Her dedication to the welfare and rights of children was duly recognized when she was appointed as a Member of the Order of Australia (AM) in 2014, and subsequently named the Queensland Australian of the Year in 2015. Johnston's unwavering commitment to child protection and welfare has left an indelible mark on Australian society, making her a highly respected and influential figure.

Harriet Selina Pettigrew, also known as Bessie or Hetty Pettigrew, was a renowned British artists' model and sculptor from Portsmouth. Born in 1867, Hetty moved to London with her family after her father's sudden death to pursue artistic opportunities. Alongside her sisters, Rose and Lily, she became a sought-after artists' model, posing for famous painters such as James McNeill Whistler and John Everett Millais. Hetty also had a close relationship with the French painter Theodore Roussel, with whom she had a daughter named Iris. Later in life, she pursued a sculpting career and exhibited her works at prestigious venues. Hetty Pettigrew passed away in London in 1953 at the age of 86. Her legacy lives on through her contributions to the art world as both a model and a sculptor.

Hetty Bower (1905-2013) was a prominent British political activist and suffragette who dedicated her life to advocating for social and political change. Born in East London at a time when women were denied the right to vote, Bower became a fervent campaigner, particularly known for her involvement in the fight for healthcare accessibility and against welfare cuts and austerity measures. Her activism spanned over nine decades, during which she actively participated in political movements and even ran a refugee hostel during World War II. Bower was a founding member of the Campaign for Nuclear Disarmament (CND) and continued her political engagement well into her later years, delivering a speech at the 2013 Labour Party Conference just two months before her passing. Her dedication to peace and equal rights earned her widespread recognition, with tributes from prominent political figures and her recognition as The Guardian's Woman of the Year in 2011. Bower's legacy continues to inspire and her tireless efforts in advocating for social justice and equality remain an enduring testament to her impact on British politics and society.