When William Spence born,do you know County in Ireland,Where he and Sarah lived in USA.Do you Know Sarah maiden name,Names of children
and dates.Often people will immigrate to Canada first and then later cross
border To USA.Usually they settle northern border states USA too
Canada.Look in U.K. too Canada Immigration.Put that in Google,they will list sites you can look on,Meanwhile send me everything you know
about them and there family.