Getting to Grips with my Garden

Apologies if these are obvious - i've been trying to get a handle on my overgrown garden and am trying to learn to recognise what is there.

So here is what I've been looking at. Thank you in advance

 

Top photo is of a Peone, no idea about the others ! ! ! Cheers, Tony.

 

No 3 looks like one of my lilac trees ?

 

1. Agree Paeonia.
2. Euphorbia sp.
3. Agree Syringa vulgaris. Lilac

 

Thank you so much for your help all

 

P.S.
2. Could be Euphorbia amygdaloides purpurea

http://www.google.co.uk/search?ix=acb&q=euphorbia+amygdaloides+purpurea&um=1&ie=UTF-8&hl=en&tbm=isch&source=og&sa=N&tab=wi&ei=fG6FT6eINer80QXT0_XhBw&biw=1280&bih=647&sei=gG6FT8XoEInb0QWH6ZDVBw

Watch out for the white latex sap. It is toxic.

http://www.euphorbia.de/giftstart_e.htm

 

No 2 looks like Euphorbia dulcis Chameleon. It self seeds readily but can take a long time to get established.