Gilbert was born before 1217. Gilbert's father was Richard de Umfreville. He was an only child. He died before March 13th, 1245.
General Notes
As a result of his marriage, Gilbert de Umfreville was styled as Earl of Angus, jure uxoris. He gained the title of Lord of Prudhoe and Redesdale, in Northumberland. On 8 January 1226/27 he did homage for his father's lands.