Hi Lisa
For the England side of the Tilley family you could contact the England Project. The G2G post to answer to join is here. Some more research would be good before adding any more profiles. At the moment it is not clear whereabouts in England he came from. Two secondary sources give two locations, Devon and Exeter, as his place of birth, but neither have visible sources.
Another project would be better suited for the US side and could perhaps help you with his post immigration life.
There are a lot of clues in the secondary sources, and a lot of Tilleys on Wikitree, including a couple that are managed by projects.