Nigel, my grandmother, Gertrude Argyle, emigrated to Toronto in 1913 with her mother and father, Ellen and George Henry Argyle and her new husband, Jack Ledsham. She left behind a regiment of dearly loved cousins, aunts and uncles in Abingdon. They wrote poems and messages into her autograph album before she sailed away. A photo I have of several of them would not help, unless you have a relative who could identify them. Maybe Cousin Charlie is in the company. These people look middle-aged to older and the time was 1944 or 1945. Charlie is not on my copy of 1891 Census from Abingdon. Either he was one of the oldest children and had moved away or one of the youngest, as yet unborn. If Aubrey was born around 1900, his father would have had to be among the eldest, born around 1880. It's possible.
Will you ask your mother if she recognizes any of the names which I put in my first e-mail? Particularly the first names. It is interesting that they are women.In a phone conversation I just had with my uncle, he said that Edith (Argyle) Pusey, one woman on the list, had numerous brothers who were killed in WW1. Does your mother have this info amid family lore? Charlie could have been a surviving brother.
If Charlie is your great grandfather, your great great grandfather Argyle was William Argyle. His wife was Sarah, apparently 14 years older than he.