Walter Fitz Otho of Fitz Other; held among other manors that of Stanwell, Middlesex, at the Domesday Survey 1086; married Beatrice and died in or after 1100. [Burke's Peerage, p. 2261]
Walter Fitz Other; tenant-in-chief (ie. holding direct of the Crown) of lands in Berks, Bucks, Hants, Middx and Surrey at the time of the Domesday Survey 1086; Castellan of Windsor and Keeper of the Great Forest there. [Burke's Peerage p. 1679]
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Castellan of Windsor 1078; warden of Forests in Berks 1066-1078, Lord of Eton
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WALTER FITZOTHER, of Windsor, a Domesday tenant of lands in Berks, Bucks, Middlesex, Hants and Surrey, held a barony owing 15 or 20 knights' fees to the castle guard of Windsor, where he was Keeper of the Great Forest and castellan of the castle. He m. Beatrice. He was living in or after 1100. [Complete Peerage X:10, (transcribed by Dave Utzinger)]
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Note: I originally had Gwladus verch Rhiwallon, wife of Rhys ap Tewdwr, as a 2nd wife of Walter. In a post-em Curt Hofemann, curt_hofemann@@yahoo.com, cleared up some of the mystery, while opening up several more (see below), his post-em begins with my note expressing doubt:
"Note: Her marriage to Walter Fitz Other is indicated in many internet sources. However it is not backed by Burke's Peerage. Additionally her daughter Nesta is documented to be the wife of Walter's son Gerald Fitz Walter which would not have been likely if Gerald's mother were Gwladus. She may have been mother of some of Walter's children, instead of Beatrice?"
Perhaps the answer to your above quandary is the possiblity that the Gladys/Gwladys that married Walter fitzOtho was not the dau of Rhywallon ap Cynfyn, Prince of Powys. Turton indicates Walter's wife was Gladys dau of Havallon ap Eynfyn Prince of North Wales (no further info on him). My notes do not show that Turton listed a second marriage for Walter to Beatrice.
This, if true (& with Turton, that's a BIG if), would eliminate the problem of the son of Walter marrying the dau of Gwladus verch Rhiwallon.
Regards,
Curt
Note: The mystery is that Turton, on page 144, states that Walter's wife is Beatrice (agreeing with CP (X:10), AR (line 178-2) & BP (p. 1679)). I cannot find any other mention of Walter or Gladys verch Havallon in Turton's book, although I can't guarantee that it isn't there. I see that Mike Hofemann, who may be related to Curt, has the same information in his World Connect database (mhofemann) and uses Turton and Paul McBride as sources, yet "Ancestors of Paul McBride" states that Walter's wife is Beatrice. Maybe Turton & Paul McBride changed their pedigree, yet I don't think that Turton has been updated since 1928 when it was first published. I am eliminating Gladys/Gwladys as a 2nd wife of Walter until such time as a valid source indicates that it is so, since all four published sources seem surprisingly unanymous in stating that Walter's wife was Beatrice.