Yes it's difficult but it's possible to see surnames repeated even if they're illegible.
I do appreciate you just want everything properly sourced but there are far worse profiles than this one for making unwarranted assumptions. I'm inclined to think the identification of his parents is probably correct, more so if it could be determined that his mother did indeed die in 1634. It's not just that his name and age agree, it's the fact he's from the London area and might well have been recently orphaned, which would explain his journey apparently without family members.