Margaret O'Brien Peerage person ID=190762 (b. 1937) Parents Teige O'Brien, Prince of Thomond Tadhg an Chomhaid Ó Briain Children Lady Joan FitzGerald, of Desmond Garret FitzGerald Ellen FitzGerald Eleanor FitzGerald Siblings Slany O'Brien Honora|Slaney O'Brien Toirdhealbhach Donn Ó Briain Partners James FitzGerald, 8th Earl of Desmond
