I think we are talking about 2 X Richard Holt, father and son.
There is a mention here of Christine, wife of Richard Holte and granddaughter of Roger de Colreth, aged 50 or more on 2 May 1444.
And page 503 in the Victoria county history of Hampshire, vol 2, specifies that Christine Colrithe wife of Richard Holt, left a son Richard Holt, who died in 1458, leaving a daughter Christine (though it gets the name of Christine's daughter's husband wrong)
Back on page 486 of the same volume, it states that Richard Holt died in 1458 leaving 2 daughters and co-heirs, Christine aged 14 and Elizabeth, aged 10. (Again it calls John Blount, William Blount).
I can't find an inquisition post mortem for either Richard Holt, which might help in working out for sure if they are father and son.
To confuse matters more, though there is a mention of a Joan Chamburleyn, aged 18 and more in April 1445, who is the wife of Richard Holte junior. See here http://www.inquisitionspostmortem.ac.uk/view/inquisition/26-339/
There is also "Richard Holt was enfeoffed by his mother Christine in 1447 (in manor of Pury) in Vol 4, page 28, of the same County History of Hampshire.