Raining - I don't care much for weather names but I don't think this is any more far-fetched than naming a child Stormy or
Sunny, and people do.
Yonder - For better or for worse, people will assume (okay, maybe just me) that Yonder is somehow connected with specific regions of the U.S. since "yonder" is a very regional term. I wouldn't be surprised if there were areas of the English speaking world where people would be completely unfamiliar with the term "yonder."
Hawkeye - My first thought upon hearing Hawkeye: "As in M*A*S*H?"