Hi Plascoch
Unfortunately, this is all before the start of official registration from 1855. If Hugh died before this date, you may not find any record of it in the Old Parish burial registers (have you checked on Scotlands People?).
I can only see one birth for their children on IGI:
MARGARET BOWMAN Birth: 25 MAR 1825 Maybole, Ayr
Parents: HUGH BOWMAN and AGNESS FULTON
And they also looked to have married there, going by this IGI entry:
HUGH BOWMAN and AGNES FULTON
Marriage: 23 MAY 1824 Maybole, Ayr
Old Parish register entries have often very little info, normally no more than shown above but you don't know until you look on SP's OPR index and images what information is there.
Monica
