In The Garden: What are these two flowering trees?

I am now spending my first spring on my property in middle Tenn. and have found wonderful plants,tree's and flowers growing. I can not find what these two tree's are named. One looks like a locust, has the thorn growing at the base of each leaf stem. and the flowers are very fragrant.
This second & third picture have these flowers, but they don't smell. and when the leaves started coming out of the bud I actually thought they were flowers before opening. I'm new at this, so excuse my lack of proper wording. thanks.

 

1. Looks like Robinia pseudoacacia. Common name Black locust.

http://www.duke.edu/~cwcook/trees/rops.html



http://en.wikipedia.org/wiki/Robinia_pseudoacacia

2.and 3. Is an Aesculus. Probably A. flava. Common name yellow buckeye.

http://www.cas.vanderbilt.edu/bioimages/species/aefl.htm

 

Agree with Robinia pseudoacacia and Aesculus flava.

 

Wow, thank you! I'm saving these sites. I googled for over an hour trying to find this info. I have a little over 7 acres full of tree's, most I know. but these 2 threw me. couldn't find a good pic any where, thanks again.