What Plant Is this ?

I was in a friend garden the other day, (has been a while because of the lock down) and I noticed a plant that I had not seen before. They did not know what it was either, it has just been there years.

I thought maybe some sort of Fern, but was multiple branches, and simple unipinnate leaves not bipinnate ?

 

Would appear to be a shrub/tree.
Rhus sp.

Need good close up pics to take id any further.

rhus leaves - Google Search

 

Agree...Could even be a sucker from the garden next door.

 

Or the one next door to that.

 

Here are some more photos

Here are some more photos

 

Thanks...now has flowers.
Rhus typhina...common name staghorn sumac.

Did you look over the fence to see if they have one as well?

rhus typhina - Google Search