I couldn't say for sure. I have looked around but found nothing conclusive. I know they were not brothers. Different fathers whose age differance appears to be about 20 years so I doubt the fathers were brothers themselves. They could have been cousins or uncle/nephew. You would have to use one of those geneoligical websets or check local records. I don't know how common the name Painter is in England but both families seem to be long time residents of Southampton so I would bet there is a connection.