Post by Pam DelamareLady Dervergulla de Balliolo is in the IPM 18 Ed 1 (1289) and her son and heir is John Balliol.
https://www.british-history.ac.uk/inquis-post-mortem/vol2/pp467-479#highlight-first
She is also in the IPM of John de la Mare regarding land at Hitchin, Herts and his son John de la Mare 6 Ed 1 (1276) holding land at Offley, Herts.
Also in the IPM of Peter de la Mare (1248-1292) of Market Lavington, Wilts; holding Offley, Herts , part of which is held of John de Balliol.
https://www.british-history.ac.uk/inquis-post-mortem/vol3/pp30-54
John de Balliol (b abt 1208-1286) m Devorgilla of Galloway, d/o Alan, Lord Galloway & Margaret of Huntington. Dervorgilla's family was wealthy.
Since this family has come up, does anyone know where the dating to
before April 1236 of the marriage of Christian (Alan of Galloway's
daughter born before Devorguilla) came from in CP vol. 1 p. 355?
No authority was cited, and I wonder where any mention was found of this
marriage before the death of Christian's maternal uncle John, earl of
Chester, in 1237. Very soon after his death William de Forz and
Christian tried to inherit the earldom, litigating from July 1237 until
denied in the following year, but this process is the earliest
documentation I've seen cited for them as a married couple.
They were almost certainly married by 1233, as in that year Alan
arranged for Christian's younger sister to marry John Balliol. In *The
Lordship of Galloway* (2000) Richard Oram wrote (p. 147): "The order of
the marriages of Alan's daughters and the status of their husbands is
[sic] an indication of their order of seniority. Before 1234 Helen
married one of the greatest Anglo-Scottish landholders of the day, Roger
de Quincy ... No date is recorded for the marriage of Christina, but it
occurred before Alan's death", and (p. 134): "In 1233, amongst his last
recorded acts, Alan arranged the marriage of his youngest daughter,
Dervorgilla, to John Balliol of Barnard Castle, and of his sister, Ada,
to Walter Bisset, lord of Aboyne".
Peter Stewart