One on family search looks good.
William Wood
baptism/christening date: 05 Apr 1801
baptism/christening place: Sandhurst, Kent, England
father's name:
mother's name:
Elizabeth Iggelsden
Link to source
https://familysearch.org/pal:/MM9.1.1/NT2L-124
So what makes you think the mother is Mary, could she be a second marriage for William?