Interested in your search. My father was also called William Ewart Loughton (changed this to Laughton in about 1950) son of Herbert Ewart Loughton from, I think, Lincolnshire in UK. I know little of Herbert Ewart but he or the family mover to Manchester and he was killed 2-3 days before the end of WW1 in France. Married Annie. Know nothing earlier.