I've spent lots of time on the beach, been around every corner at least a few times. No, the General or Timothy have not been seen.
I do know that other Bosses do generate after killing a few Gypsies or Raiders. I had told Skip that I saw a couple of the Bosses, since working weapons isn't his favorite thing to do......... knowing the Bosses by name would be um a surprise to me
We mostly like to sail, test out new features, if anyone is working weapons, it would be me in my spare time.