James Wilberforce Coubrough, and his wife, Grace Selby, had a son named Ronald McDonald Coubrough, born 1908, in New South Wales (probably Sydney). I don't have his exact date of death, but I believe it was in the early 1990's. I understand him to have lived at a place called Kangaroo Point. James W. was Helen Coubrough's older brother, so Ronald McDonald Coubrough would have been a first cousin to Ronald McDonald Ingram. Perhaps he is the one you want?