I just flipped through a book of Saxon art, and I didn't see anything better. It had lots of doors, chalices, weapons, grave stones, and armor. Some of it was more simplistic. One was similar to the second one you posted, but looked more like bones. One was similar to the third you posted, but more primitive. Are you going to do a coordinating tattoos between arm and back? The guy who did my piercings is really good, and also does tattoos, I can ask him if he has other sources for Saxon designs. Otherwise.. I'd go with the lion one you're most passionate about for your back, and just get a good artist. Then, maybe do a more simple pattern for the sleeve band.