Foster/ Walkerof Ontario,Canada

Looking for info on William Ford Foster /George Dalton Foster born in Northbay ,Ontario, Canada. George was born 05/18/1909. Requesting info on William Ford Foster, birth place unknown..(Canada or England). Did some research, kept hitting dead ends in Dorchester, England...
Also searching the William Walker clan from London Ontario,Canada...have some info, but need to fill in the blanks.
Also searching the Evangaline Smith clan from the London Ontario,Canada area...have some info, but still have some questionable connections to the Greville family of Warwick Castle in England that I would like to confirm.