Ferdinand II, also known as Ferdinand the Catholic, was a significant figure in Spanish history, reigning as the King of Aragon from 1479 until his passing in 1516. Alongside his wife, Queen Isabella I of Castile, he co-ruled and unified Spain, earning them the title of the Catholic Monarchs. Their marriage laid the groundwork for the Spanish monarchy and played a pivotal role in European colonization, sponsoring Christopher Columbus's first voyage in 1492. Their joint rule saw the completion of the Reconquista, the expulsion of Jews, and the forced conversion of Muslims. Ferdinand's later years were marked by disputes with France over control of Italy, known as the Italian Wars. Despite his legal successors, including his daughter Joanna and grandson Charles I, Ferdinand's reign left a lasting impact on the unified territories of modern-day Spain. Born in 1452 in the Kingdom of Aragon, Ferdinand's marriage to Isabella and their joint rule of Spain shaped the course of history, leaving an indelible mark on the European continent and beyond.

Ferdinand I (1793–1875) was the Emperor of Austria from 1835 to 1848, also holding titles such as King of Hungary, Croatia, and Bohemia. Known for his passive yet well-intentioned character, he was often referred to as The Benign or The Benevolent due to his demeanor. Suffering from severe epilepsy, Ferdinand was unable to effectively rule the empire, and a Regent's Council steered the government during his reign. After abdicating in 1848, he lived in Hradčany Palace, Prague, until his death. His marriage to Maria Anna of Savoy produced no children. Ferdinand was the last King of Bohemia to be crowned and was interred in the Imperial Crypt in Vienna. Despite his health challenges, he kept a coherent diary and was known for his sharp wit. His reign coincided with the Revolutions of 1848, during which he abdicated in favor of his nephew, Franz Joseph. Ferdinand's sympathetic stance towards Bohemia earned him the Czech nickname "Ferdinand Dobrotivý," and in Austria, he was called "Ferdinand der Gütige." His legacy continues to be remembered for his struggle with epilepsy and his benevolent nature.

Ferdinand James M. Kingsley, born on February 13, 1988, in Leamington Spa, Warwickshire, is a British actor known for his diverse roles in film and television. He has portrayed characters such as Hamza Bey in "Dracula Untold" (2014), Mr. Francatelli in the television series "Victoria" (2016–2019), Irving Thalberg in "Mank" (2020), and Hob Gadling in Netflix's adaptation of "The Sandman" (2022). Kingsley's early life was influenced by his father, actor Ben Kingsley, and his mother, theatre director Alison Sutcliffe. He attended the RSC theatre nursery, Warwick School, and the Guildhall School of Music and Drama to hone his acting skills.Kingsley's career has included notable theatre performances, including roles with the Royal Shakespeare Company and the National Theatre. His filmography ranges from historical dramas to supernatural thrillers, showcasing his versatility as an actor. Notably, he has appeared in BBC productions, Universal Pictures' "Dracula Untold," and the Netflix series "The Sandman." In 2023, Kingsley portrayed the mysterious villain A.M. in the series "Reacher" on Amazon Prime Video. His talent and dedication to his craft have solidified his presence in the entertainment industry, garnering attention in both film and television.

Count Ferdinand von Zeppelin (1838–1917) was a German general and inventor known for creating the Zeppelin rigid airships, which revolutionized long-distance flight until the 1930s. He established the company Luftschiffbau Zeppelin and his name became synonymous with airships. Born into a noble family, Ferdinand's childhood was spent at the Girsberg manor near Konstanz, where he received private education. He married Isabella Freiin von Wolff and they had a daughter, Helene von Zeppelin. Ferdinand's military career began in the army of Württemberg, where he rose through the ranks and participated in the American Civil War and Franco-Prussian War. Despite facing criticism and forced retirement from the Army, he continued to pursue his passion for aeronautics. Ferdinand's interest in airships was sparked during his visit to the balloon camp of Thaddeus S. C. Lowe and his first ascent in a balloon. His ideas for large airships were influenced by a lecture on "World Postal Services and Air Travel" and the success of Charles Renard and Arthur Krebs' airship La France. Ferdinand von Zeppelin's legacy as an aviation pioneer and inventor continues to inspire advancements in air travel and technology.

Ferdinand I, also known as Ferdinand of Antequera, was a prominent figure in the 15th century, serving as the king of Aragon, Valencia, Majorca, Sardinia, Sicily, and more. Born in 1380 in Medina del Campo, Ferdinand was the son of King John I of Castile and Eleanor of Aragon. In 1406, he declined the Castilian crown and became the regent of Castile, demonstrating his adeptness in administration. Notably, Ferdinand played a crucial role in ending the Western Schism by deposing the Antipope Benedict XIII in 1416. His reign was marked by the dissolution of the County of Urgell and the creation of the title of Prince of Girona for the heir of the Crown of Aragon. Ferdinand I married Eleanor of Alburquerque, with whom he had seven children, including Alfonso V of Aragon and Eleanor of Aragon, queen of Portugal. His legacy is commemorated in the royal pantheon of the monastery of Poblet. Ferdinand's patience and tall, ruddy appearance are well-documented, and the Italian humanist Lorenzo Valla authored an official biography of him. Ferdinand I's contributions to history are celebrated, and his impact is evident in the annals of Aragonese and Spanish royalty.Keywords: Ferdinand I, Ferdinand of Antequera, king of Aragon, Western Schism, Castilian crown, Aragonese royalty