According to The Complete Peerage, Aubreye de Lisours, successor of Robert de Lacy was his cousin, implying that her mother was Robert’s paternal aunt. This appears to be confirmed by the 1130 Pipe Roll which records "Robt de Lusor" in Nottinghamshire, Derbyshire and that he married "sorore Ilbti de Laci". An apparently different version of Aubreye’s parentage is provided by a manuscript history of the Lacy family which records that “Albreda vel Aubreia, filia Roberti Lisours, soror ex parte matris” succeeded on the death of “Robertus Lacy”. If this is correct, Aubreye’s father was the [first/second] husband of Robert de Lacy’s mother. As the husband of Aubreye junior died in 1163, the chronology suggests that, if this version is correct, it is more probable that Aubreye was the daughter of her mother’s first marriage. It appears from the 1130 Pipe Roll that the Complete Peerage version is to be preferred. 1