Is this a keeper or just a weed?
Golden alexander, Zizia aurea, perhaps?
Could it be Zizia?
Or Sanicula canadensis.
Agree with Sanicula.
Definitely Sanicula. There are three species that all look very much like that and all of them are native. Whether or not it's a weed depends on your point of view. They tend to thrive with some shade and a little disturbance, so on the edge of a garden they might be very happy.
Thank you to all who took the time to help me out!