Richeut/Richenda de Longchamp

https://en.wikipedia.org/wiki/William_Longchamp

Richeut was a "lady of great character" who commanded the Castle of Dover in her husband's absence. Her daring attempt to take Geoffrey, Archbishop of York, the King's half-brother, prisoner in Dover Castle, his consequent disguise, and her pursuit of him to the Priory of St. Martin is told in detail by Stubbs.1 It was one of the dramatic episodes in the history of Longchamp's fall, and shews Richenda to have been a lady of indefatigable spirit in helping her brother.

When the Chancellor returned to England he spent some time as her guest at the castle.

https://en.wikipedia.org/wiki/William_de_Longchamp

Longchamp's sister, Richeut, married the castellan of Dover Castle.[3][7] A second sister, Melisend, came to England with Longchamp, but otherwise is unknown.[3] A sister is recorded as having married Stephen Devereux, but whether this is Melisend is unclear. Of Longchamp's brothers, Osbert remained a layman, and owed much of his advancement to William;[8] Stephen served King Richard I on crusade; Henry, another layman, became a sheriff along with Osbert; and Robert became a monk. Two of Longchamp's brothers became abbots.[9]

Sources:

• J Robert of Devizes, p. 34.
• StubbSj Preface to Boyer of Hoveden, vol. iii. Roger ofSoeeden, iv., p. 17.
• British Museum, Ixxv., 36.
• http://www.kentarchaeology.org.uk/Research/Pub/ArchCant/Vol.036%20-...
• Balfour, David. “The Origins of the Longchamp Family.” Medieval Prosopography, vol. 18, 1997, pp. 73–92. JSTOR, http://www.jstor.org/stable/44946257. Accessed 16 Aug. 2020.