Posted: 12/06/2013 at 15:38
That's willow coming in from the left and the bulk of it looks like an ash. Millions of little ones is what they do best but seedlings not suckers as in the sumach. Can't remember the name of that species of ivy. Someone will, it's not Hedera helix
If you have something for the ivy to climb up and you like it then keep it, it's rampant, cover anything. If you want another ash, keep one, it's a big tree eventually as you can see from your stump. I think if yiou're going to cut a tree and keep the stump to grow again it looks best cut to at or nearly at ground level but that's a personal choice.