Re: Looking for all Allin (USA)
My great-grandfather was William Allin. He was one of 11 children, all from Devon, England. Both his parents, plus all of his brothers and sisters emigrated to the USA in c.1911/12 They settled in Independence, Missouri, so I should think there are a lot of descendants living in and around that area. William Allin stayed in England with his wife (he was the only one who was married at this time). I have no idea what motivated them to emigrate at this time and would love to know why, as it seems unusual that they all went, except for William, (especially as some of his siblings would have been adults at this time)
Also, I believe there were some Allinsamongst the very first settlers in America.
Hope this is of some interest to you.