The Skaggs-Files

Matilda FitzSwain, Wife of Adam de Montbegon, Book ‘Final Concords of Lancaster’, Pages 56, 57 & 58

Matilda FitzSwain, Daughter of Adam FitzSwain, Book ‘Final Concords of Lancaster’, Pages 56, 57 & 58

Adam de Montbegon, Married One of the Daughters and Co-Heiresses of Adam FitzSwain, Book ‘Final Concords of Lancaster’, Page 51, Footnote 1

Matilda FitzSwain, Wife of Adam de Montbegon, Book ‘Final Concords of Lancaster', Pages 31 & 32, Footnote 1

Matilda FitzSwain, Daughter of Adam FitzSwain, Book ‘Final Concords of Lancaster', Pages 31 & 32, Footnote 1

https://archive.org/details/recordsocietyfor39reco/page/n77/mode/1up?view=theater