his wife is Arab
Links on FR are not working at the moment, so I can't check out the source here. However, I am pretty sure it is his son-in-law, not his wife. In any event, there are far, far better things to beat Galloway over the head with than to go after his family.
"Sir, I salute your courage, your strength, your indefatigability"
--George Galloway, speaking to Saddam Hussein, 1994