 She had three brothers and three sisters, including Walter de Burgh, 1st Earl of Ulster.In 1242, Margery married Theobald Butler, 3rd Chief Butler of Ireland (1224–1248), the eldest son of Theobald le Botiller, Chief Butler of Ireland and his first wife, Joan, daughter of Geoffrey de Marsh (or Mareys), Knt., Justiciar of Ireland.Margery and Theobald had two children