Help ID tree and determine if it's dying
Hi Everyone, we moved into a house late last year and we were so happy especially our little girls to have a tree in the backyard. We have no idea what it is and we didn't think of it much then but it seems like it is dying. I am hoping that somebody can help us identify the tree, the disease it is suffering from and if it's worth saving based on the extent of the damage. New leaves come out fine but then shortly thereafter it shrinks and turns brown. The trunk and branches have what looks like swollen joints.
Thanks for the help in advance.