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)
I followed Landon's link. This seems to be the important bit. ---------------- The leaves of Prunus lusitanica contain cyanide and will release this into the environment if burnt or if crushed. The fruit is somewhat edible if fully ripe, but if it is bitter, it is toxic and should not be eaten.
I saw that it was laurel right away. I've often wondered about the fruit. ----- Now a joke.
People grow laurel because it's very hardy. Old people will get it.
it being very hardy is no joke! This Laurel was totally crushed/snapped/maimed by a heavy snowfall that broke just about every major limb it had and you can see what the fruit set looks like this year. They're unkillable. Check this jungle out!
I suppose the joke is on us young folk who decide to try to get rid of them eh? They're popping up all over the place.