Help reading a signature / identifying an artist

I was drawn to this painting at a garage sale, and the seller knew nothing about it. Could be by some random amateur, but it looks pretty good to me. Can anyone make out the signature? First name appears to be Robert, but I can't decipher the surname. No marks on the back. Thank you so much for any help you can give!! Here's an imgur album with a bunch of photos including close ups of the signature:

http://imgur.com/a/hTbhA