https://www.wikitree.com/wiki/Gilbert-9954 Presents evidence that Alice Mules married a different Otes Gilbert based on age of his son.
Note: This Otes may be one and the same as Otes Gilbert who is known to have married Elizabeth Hill but the age of the William Gilbert the son of the Otes in this profile does not seem to fit with the William of the other Otes based on age as that William would probably need to have been the 1st son. So the two Otes' could be cousins.
Birth year based on age mentioned in 22 Oct 1443 at the Inquisition at Exeter on the death of John Mulys:[1]
....John Mulys died on 13 September last. His kin and next heirs, who are also the kin and next heirs of Joan his first wife, are: William Gylbert , the son of Alice, one of the daughters of John, aged 7 on 25 March last; Joan Dabernon , the daughter of Isabel, the other daughter of John, aged 9 on 10 September last; and Elizabeth Dabernon , the other daughter of this Isabel, aged 7 on 4 August last. William’s marriage pertains by right to his father Otes Gylbert , who survives, aged 26 and more, and not to the king or any other.
8 Nov 1450: Elizabeth Dabernon:[2]
She is the kin and heir of John Mulys, as one of the daughters of Isabel, one of the daughters of John. Majority claimed by John Giffard, her husband. By royal grant, the lands and tenements from her inheritance are in the custody of Otes Gilberd. The escheator of Devon is ordered to prove the age of Elizabeth, who is said to have been born and baptized at Swimbridge, and to warn Otes to be present. [Dorse:] Memorandum that Otes was warned to be at Exeter on 18 November by Nicholas Bokelly, escheator.
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I’m going ahead and setting up another Otes.