Renard, not Renards actually. Remember Annette and Maria are not blood related but Maria and Richter are. Just in case you forgot 
Oh, I'm not talking about Maria's siblings(and yeah, Annette's not related to her). She obviously had parents and grandparents from whom she inherited the Belmont blood from. Where the Renards(as in her family line) connect to the Belmonts would probably indicate how many Renards with Belmont(and Belnades) blood existed up to Maria.