I have always been curious about the meaning of my last name, Polanco. Your information was very useful to me, and I would love to know more! If you find out more on the Polanco Coat of Arms, please let me know! The only thing I know about my last name is that my great grand-father, Florencio Polanco, was credited for La Piedra de Polanco in Puerto Rico. I hope I can find out more information on my last name!