There is a video clip of him performing with his crappy band for a local El Paso TV show. The show host calls him Bob, not Beto.
Stupid Dem candidates imagine that they can lie and get away with it. They need to wake up to the fact that that is no longer the case; if it ever really was.
I think Beto was a family nickname and his friends called him Bob. Sometimes family names stick, sometimes no. Beto became very useful in Texas, however, since it sounds Hispanic.