Powys-Lybbe Forbears - Person Sheet
Powys-Lybbe Forbears - Person Sheet
NameSir William FitzWilliam 
[60, FitzWilliam article, Vol V, p. 519], [100, John Ravilous, "Thornhill of Thornhill", 20 Sep 2004], [118, FitzWilliam, Vol II, pp. 70-1]
[60, FitzWilliam article, Vol V, p. 519], [100, John Ravilous, "Thornhill of Thornhill", 20 Sep 2004], [118, FitzWilliam, Vol II, pp. 70-1]Deathbef 1342
GeneralOf Sprotborough (Moor).
FatherWilliam FitzThomas (-<1294)
Spouses
Notes for Sir William FitzWilliam
CP says of his wives: "He apparently married twice, (1) Maude, dead in 1324, and (2) Isabel Deincourt, who dies 1348, apparently s.p." So I have made Maud the mother of his two children. But the Yorks Visitation of 1563-64 shows Isabel Deincourt as the mother, though some 200 years after the event.
Executor of his father's will in 1294 (so adult then?).
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However on 23rd May 2007 on s.g.m., John Ravilious has produced evidence that Isabel Deincourt was John’s mother:
Harking back to past discussions concerning Sir William
FitzWilliam of Sprotborough and Emley, Yorks. (d. aft 4 Mar
1338/9) and his issue, as I recall it has been all but proven
that the daughters of Sir William (e.g., Margaret, wife of Henry
de Pierrepont, and Joan, wife of Sir Brian de Thornhill) were
his issue by Isabel Deincourt, his (apparent) 2nd wife. Based
largely on her will dated 25 July 1348, it also appeared that
Sir John FitzWilliam, eldest surviving son and heir of Sir
William, was her son as well [she made a bequest to
"Johanni filio meo", among others], but I recall there had
remained a doubt in some corners.
An otherwise obscure record concerning lands in Dalton juxta
Thribergh, Yorks. serves to cement the relationship. In
Isabel's will she calls John her son; in this demise by John
FitzWilliam dated 29 May 1348 - obviously during Isabel
Deincourt's lifetime - she is called "Isabella, the grantor's
mother".
' 1348. Demise by John son of Sir William, Knt. Knt.,
29 May. Knt., to Robt. Loveday of Dalton of one messuage
1 1/2 oxgang, a plot called Molde Riddyng', and
half an assart called the Newebrekk', which as appears
by inspection of the grantors court rolls of Dalton, the
said Robt. holds by demise of Isabella, the grantor's
mother, for her life for 24s. 6d. rent; for 40 years
after her death at the same rent.
Witnesses: - Sir Thos. Clarell, Ralf de Rerisby, John
del Hill of Dalton, Adam Gamell, Wm. Mauger, Ric. son
of Nicholas de Ravenfeld, John de Blida, clerk.
Sprotburgh, Thursday, Ascension Day, 1348. [B. 86.]' [1]
The Deincourt ancestry of the later FitzWilliams of
Sprotborough, and of the descendants of the FitzWilliam
daughters, is certain. The matter of the maternal ancestry
of Isabel Deincourt (possibly not via de Mohun) still deserves
further study.
NOTES
[1] Alfred S. Ellis, Yorkshire Deeds, YAJ XII:239-240.
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Executor of his father's will in 1294 (so adult then?).
____________________________________________________
However on 23rd May 2007 on s.g.m., John Ravilious has produced evidence that Isabel Deincourt was John’s mother:
Harking back to past discussions concerning Sir William
FitzWilliam of Sprotborough and Emley, Yorks. (d. aft 4 Mar
1338/9) and his issue, as I recall it has been all but proven
that the daughters of Sir William (e.g., Margaret, wife of Henry
de Pierrepont, and Joan, wife of Sir Brian de Thornhill) were
his issue by Isabel Deincourt, his (apparent) 2nd wife. Based
largely on her will dated 25 July 1348, it also appeared that
Sir John FitzWilliam, eldest surviving son and heir of Sir
William, was her son as well [she made a bequest to
"Johanni filio meo", among others], but I recall there had
remained a doubt in some corners.
An otherwise obscure record concerning lands in Dalton juxta
Thribergh, Yorks. serves to cement the relationship. In
Isabel's will she calls John her son; in this demise by John
FitzWilliam dated 29 May 1348 - obviously during Isabel
Deincourt's lifetime - she is called "Isabella, the grantor's
mother".
' 1348. Demise by John son of Sir William, Knt. Knt.,
29 May. Knt., to Robt. Loveday of Dalton of one messuage
1 1/2 oxgang, a plot called Molde Riddyng', and
half an assart called the Newebrekk', which as appears
by inspection of the grantors court rolls of Dalton, the
said Robt. holds by demise of Isabella, the grantor's
mother, for her life for 24s. 6d. rent; for 40 years
after her death at the same rent.
Witnesses: - Sir Thos. Clarell, Ralf de Rerisby, John
del Hill of Dalton, Adam Gamell, Wm. Mauger, Ric. son
of Nicholas de Ravenfeld, John de Blida, clerk.
Sprotburgh, Thursday, Ascension Day, 1348. [B. 86.]' [1]
The Deincourt ancestry of the later FitzWilliams of
Sprotborough, and of the descendants of the FitzWilliam
daughters, is certain. The matter of the maternal ancestry
of Isabel Deincourt (possibly not via de Mohun) still deserves
further study.
NOTES
[1] Alfred S. Ellis, Yorkshire Deeds, YAJ XII:239-240.
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