Jarvis was called many different names in the records i found including Gervase, Larase, James, Jennins, Jervis and Charles. He had 9 Children, Anne b. 1830, Mary Jane b.1832, Margaret b. 1833, Jarvis b.1834, Romeo b.1835, Caroline Catherine b. 1837, Margaret Jane b.1840, Ann b.1842 (my direct descendant) and Julie b. 1844. all baptised in St Andrew, Glasgow.
I had the 1841 census for ann and i have seen the 1851 one but wasnt sure until now if it was related and i only have one of their marriage records. the less detailed one.
1810 was just my rough estimate given the year they were married. it could be he was born much earlier.