one or 2 't's depended on parish clerk tt became the norm as century progressed
the family are in Port Erin (port Iron) in 1841 Edward snr a fisherman - also daus cath + matilda; Edward + wife ann are alone in 1851 also in Port Erin (still a fisherman)
If Ann married at 18 then marr entry should indicate this
Edward is also certainly s/o samuel Watterson + isabel Nelson who married in malew Sam of rushen, isabel of malew