Here is a thread of a hunt for Dashers. It shows Alfred and Joseph , the eldest sons Of Henry Augustus and REbecca Dasher from Birkenhead, migrating back to the USA with a later migration of Jane Everette Dasher and her being adopted into the same family that Alfred and Joseph had lived with in the US. Jane is Alfred and Josephs little sister. This thread also has solid links, yet unverified, to a possible Henry Augustus Dasher's (Sr) mother or auntie.
I've not had a chance to follow up on any of the leads, but do keep me in the loop of you find anything, perhaps even join that forum conversation. There are some incredible genealogy helpers out there very willing to offer up info to help searches.http://www.rootschat.com/forum/index.php/topic,firstname.lastname@example.org