Trees, Shrubs and Conifers: Tree ID please - thought this was an Eastern Redbud :(, 1 by Emma75

Emma75 wrote:
This is an 8 year old tree that I've babied since it was a berry dropped into my garden by a bird. I've anxiously awaited a flush of pink blooms. It finally bloomed.....yellow :( Now, I have no idea what I have growing in my garden, and would greatly appreciate any help in ID-ing, especially since we are in the process of underplanting it.

Will try to upload additional images as comments - DG is having trouble uploading all at once for me.

Many thanks!
Emma :)