William FitzGerald, 13th Earl of Kildare Irish peer (1563–1599) Parents Gerald FitzGerald, 11th Earl of Kildare Mabel Browne, Countess of Kildare Children Siblings Henry FitzGerald, 12th Earl of Kildare Gerald FitzGerald, Lord Garratt Lady Mary FitzGerald Lady Elizabeth FitzGerald