I too have a mystery William Allan, this time with roots in the Scottish Borders but possible earlier links to Caithness in the North. He married Agnes Bruce and they had three sons, William (my gGrandfather b. Edrom 1837),Robert(b. Edrom 1843) and Thomas (b Edrom 1845). One of the Allan siblings emigrated to USA, his descendants later living in Hackensack, NJ. Does this ring a bell with any Allan seekers?Note that Allan is a very common Scottish name. I was amazed to see just how many William Allans appeared on the IGI. As somebody else in this forum says, almost as common as John Smith. Best wishes to all searchers.