Ernest Patrick English had only one child still alive, Ernest Robert English, and perhaps the father couldn’t, or wouldn’t, look after him, which is why the Machells stepped in. That’s a much sadder story, so perhaps Ernest Robert English tried to make himself a ‘hero’ of his life story with the drama of a teenage rebellion?
The Machells didn’t adopt Ernest, and he’s not buried with them. Maybe he was more of a foster child?