I just realized I never came back to this. 3 days after Slim returned from his trip Torme showed up howling at the back door. He later became an inside/outside cat, and was much happier with this situation.
To update, Slim and I have moved into the home he originally wandered up to. He seemed very happy to be here. He lovingly kept Slim company on Slims nightly venture outside for a book and cigar, he claimed his favorite outdoor chair where he could always be found, and protected sweet Sophie from any other cats trying to bully her. My brother came to town last weekend. Brother, Slim, and friends spent a good part of Sat night outside chatting, smoking, etc. Sometime around midnight Slim returned Torme to his comfy chair as he always did before heading in for the night. The next morning Torme was found in the neighbors yard without a mark to be found on him, but most definitely dead.
We buried him in the back yard flower bed where all other loved animals in this family have been buried for the last 28 years. We planted bulbs around him so that every spring Payton and Slim can go smile at the "Big Dog". It's been pretty hard, and we all miss him so much. It is harder for Slim and Payton.
Ironically enough, tonight a large gray tabby wandered up to Slim. He is beautiful!!! Gray Tabby with ORANGE mottles and white feet. We are leaving him alone right now because he must belong to someone as he is declawed on all four. Let you know how it progresses.
Thanks for helping us name the guy!
Red and Slim