I'm not an expert on trademarks and such, but there is a RonnieJamesDio.com site which is owned by Niji Entertainment Group.
Niji Entertainment Group is a record label that Ronnie and his wife formed in 2010. My guess is that they hold the trademark for his name, and that your sites are likely in violation of that. I am not a fan of this guy, but a few seconds of research turned that up for me.
I wouldn't risk it with your sites. Looks like a violation to me.