William Greene, of Groton - Evidence for parents?

William Green, Groton proprietor Is seen as the son of Dea. John Greene, of Charlestown & his wife Perseverence Green but no son William is associated with him that I can see.

This sourced blog: http://pinetreesandpedigrees.blogspot.com/2014/12/52-ancestors-50-w...

Begins:

52 Ancestors: #50, William Green, Groton Proprietor. My 7x great-grandfather William Green was born around 1640,1 but who his parents were, or whether he was born in England or Massachusetts, is unknown. …

I’ve disconnected the profile from parents. If anyone has evidence to support origins, please advise & present it. Parents can always be put back.