This looks to me to be what I in my colloquial would call a 'laurel'
I am actually seeking info on this plant too. Thus the bump. These berries taste quite bad most of the year. But now (when the birds swarm to eat them) they dont taste half bad. Not sure if they're edible I've only nibbled on a couple with no ill effects. My
chickens eat them, but only this time of year.
More photos (these are my photos not Williams as I am relatively certain we are talking about the same plant)