Theobald de Burgh

Robert and Janet Chevalley Wolfe, Janet and Robert Wolfe Genealogy, "Notes for Walter de Burgh and Aveline Fitz John"
Webpage: http://www.umich.edu/~bobwolfe/gen/mn/m33594x33790.htm

The Oxford Dictionary of National Biography states that Walter de Burgh was the first earl of Ulster, a magnate, and a soldier, and …

Earl Walter died at Galway on 28 July 1271 … His widow died in May 1274 … In addition to his successor, Richard de Burgh (d. 1326), Walter and Avelina had a son named Theobald (d. 1303), and a daughter, Egidia, who married James Stewart, the high steward of Scotland (d. 1309).

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• Robin Frame, "Burgh, Walter de, first earl of Ulster (d. 1271)," Oxford Dictionary of National Biography (Oxford University Press, 2004, online edition). <Subscription>