Lady Joan de Burgh Peerage person ID=151417 (1300–1359) Parents Margery de Burgh Richard Óg de Burgh, 2nd Earl of Ulster Children John FitzGerald Lady Emily Fitzgerald Elizabeth Butler, Countess of Ormond Richard FitzGerald, 3rd Earl of Kildare Aymer Darcy Roger Darcy Maurice FitzGerald, 4th Earl of Kildare Sir William D'Arcy Siblings Katherine de Burgh Aveline de Burgh Edmond de Burgh Maud de Burgh John de Burgh Eleanor de Burgh Elizabeth de Burgh unknown son de Burgh Partners John Darcy, 1st Baron Darcy de Knayth Thomas FitzGerald, 2nd Earl of Kildare