Hello Jessie, I have a William Allan who I am Currently researching,I have no dates for him or his wife, Margaret (nee Cunning(ham)or(ton)), they had a daughter Agnes Allan b.20/11/1842 in Paisley Refrewshire, she married John Nelson Walls and came to New Zealand. These people were my ggg-Grandparents. Have you tryed subscibing to the Renfrewsire Surname lists? I have some feed-back of the name William Allan, Happy to share if you are interested. Tania Wellington,NZ.