Posted: 15/08/2017 at 08:01
It sounds like it is a Rhus Typhina, commonly known as the stags horn tree. Without a picture to see I can only go on how you describe it.
If it is this tree they are prone to sending out suckers, this can be managed by digging or pulling thease suckers out when they are small.
Ive looked on google and if you put in Rhus Typhina pruning there is a section on this.
I have one of thease trees and I agree with you they are quite beautiful.