 While at the court of Edward VI, FitzGerald met Mabel Browne, daughter of Sir Anthony Browne, Master of the Horse and his first wife Alice Gage; after Alice's death Anthony became the first husband of FitzGerald's sister, Elizabeth FitzGerald.Kildare and Mabel Browne married during the reign of Mary I on 28 May 1554, in the Chapel Royal.Amongst a certain branch of the FitzGerald's there was a belief/legend that the 11th Earl of Kildare had been married to an Ellinor O'Kelly by Thomas Leverous (later Bishop of Kildare) in 1545.