they had at least 3 children JJ is 1st then Robert 1897 + Cath 1899 all reg in Douglas - John Thomas Cain + Julia Jane Comish/Comaish - don't think any birth cert gives marital status tho - any marr is likely to be in Douglas if post birth of 1st child - can you not check via Manx Museum (they have Family search available free for users)