Pridmore brothers

This picture is of two Pridmore brothers and maybe one of their sons. The man on the right is known to be William Henry Pridmore. The one on the left is thought to be Govan Mitchell Pridmore, Williams brother but this is not certain. The younger man in the middle is totally unknown.

Would like to know for sure if this is Govan M. Pridmore, his was one of my gggfathers. Also would like to known who the third man, the one in the middle is.