Athelaise
- Born: Abt 1040, Rycott, Oxfordshire, England
- Marriage: Geoffrey de Mandeville Baron Of Pleshy 141
- Buried: Westminster Abbey, London, England
 Information about this person:
• Background Information. 141
Geoffrey de Mandevillde (of Great Wltham, Saffron Walden, High Easter and Plehey, Essex, Edmonton and Efield, Middlesex, Sawbridgeworth, Herts., Quarrendon and Amersham, Buks, Steatley. Berks, Long Compton, co. Warwick & Constable of the tower of London ) was the son and heir of William de Mandeville of the same (who died in or just before 1130) by (it is said, but probably erroneoulsy) Margaret, daughter of Eoun de Rie, Dapifer, of Colcheter, Essex. William was the son and heir of Geoffrey de Mandeville (who had held the aforesaid manors at the Domesday Survey), by his 1st wife Athelaise.
~Cokayne's Complete Peerage, 2nd Edition, (Essdex), Vol. v, pp. 113-114
Athelaise married Geoffrey de Mandeville Baron Of Pleshy. 141
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