Curate, connect, and discover
I feel like the manor was built ontop of Alfred’s territory and he made an agreement with the Wayne’s that he would let them keep the manor there and even take care of it and put it under his protection and make it a part of his territory in exchange for money.
And then he grew fond of the humans and has a similar relationship with them as most fae have with shiny things. He absolutely loves them and he’s always the first one who realizes that Bruce has adopted another child.
(Sorry if my English isn’t very good/hard to read, English is my third language and I don’t really know how commas work lol)
Wally: How old is Alfred?
Dick: Whoa, you can’t just ask things like that, man.
Wally: Oh, sorry. I just, he seems kinda old, you know?
Dick: I’m pretty sure he’s immortal.
Wally:
Wally: Yeah, that checks out.
Roy: Didn’t he fight in a war or something?
Dick: Yeah, I think he fought in the Battle of Hastings.
A little ways over
Bruce: So, are you going to correct them?
Alfred: You have yet to determine my age, Master Bruce, and if you think I will succumb to such measly attempts as this you are sorely mistaken.