So, Mum is finally getting around to cleaning up the house so she can sell it, including some old books and things she hadn't looked at since before I was born. The amount of dust on these boxes was vile. And tucked away in one of those books was a picture none of us were expecting to find (and we're not telling Dad she found it because it would get him going for no bloody reason). So she gave it to me. And now I'm sharing.
astar_isborn, if you ever needed proof Matt's your Dad, here you go.