Unfortunately, the marriage info doesn't include her age at the time. I know it's not very accurate, but since I know my Grandfather was born in Saddleworth, Yorkshire in 1830, I've found a Matilda Ward also born in Saddleworth in 1828 who's father's name is also William and mother's name is Hannah - but I can't be sure that's her. If it is, that Matilda Ward I found on the 1841 Census, but she's a servant in a household, so parents weren't listed.