My suggestions as to where George junior lived.
The family home of St Lawrence House, Canterbury, with a household of nursemaids, tutors and a female relative. The step-mother remarried, as we know, in a year or so.
He had several aunts, the most likely one is Ursula, married to Sir Thomas Hardres and probably living at Upper Hardres, a few miles away.
I doubt if you will ever know definitely, but I have had fun checking it, as this is local history for me, and touches on people and places I have recently researched.