Gerald FitzGerald, 13th Earl of Kildare, was an Irish nobleman born in 1513. He belonged to the prominent FitzGerald family, which played a significant role in Irish history. As the Earl, he was known for his influence in both political and social matters during the Tudor period in Ireland. He became the Earl in 1529 after the death of his father, the 12th Earl. Gerald was involved in various conflicts, including the Kildare Rebellion, which aimed to assert the power of the FitzGerald family against English rule. His life reflects the complexities of Irish nobility during a time of significant change.