Hi Averil
While using the iMuseum site today, I looked at William Watterson / Cath Vick marriage record again. The one I have in my home file is from the IGI and I copied it a while ago. The current one on iMuseum differs from what I have in that both fathers' names are recorded. I guess I should have revisited the record before I began - this is what iMuseum's record says
William Watterson
Date/Epithet 17 May 1884
Category Marriages
Parish Braddan
Biography
Married: Catherine Vick. Groom's marital status: Bachelor. Groom's father: John Watterson. Bride's marital status: Spinster. Bride's father: John Vick. (MS09073/3/12)

Apologize for the extra work I've caused. I'll have to ensure I check my sources again before starting on new searches.