Louis of Acre de Brienne , Vicomte Beaumont
Louis of Acre de was born in 1227 in Acre, Palestine.  He died at the age of 70 on September 1st, 1297 in Beaumont-le-Vicomte, Maine, France.

 Agnes Heiress de Beaumont
Agnes Heiress de was born before 1235 in Beaumont-le-Vicomte, Maine, France.  She died on May 9th, 1301.

 Isabel de Brienne
Isabel de was born about 1260 in Beaumont-le-Vicomte, Maine, France.  She died before November 1st, 1334 in Bamburgh Castle, Northumberland, England.  She was buried in Black Friars, Scarborough, Yorkshire, England.

 Henry 1st Baron de Beaumont , Earl of Buchan
Henry 1st Baron de was born about 1263 in Beaumont-le-Vicomte, Maine, France.  He died in Buchan, Aberdeen, Scotland.  He was buried in Lord Isle of Man, Constable of England & of Army, Knight, MP.