I have never seen the new Solo movie, so this may be a dumb question, but really, what is Chewbacca's last name, if he has one? Han just calls him Chewie, Chewbacca, or thing's like that, and never (as far as I remember) mention's his last name. I have wondered this for a while, and would be grateful for a reliable, canon answer (not based on a comic or that Star Wars Christmas special or something similar) if that is possible.
[In] the Legends book titled "The Star Wars 7", Chewbacca and his family are identified as the "Sawa Tribe" among other clans on Kashyyyk. The name means that they are one of the most powerful tribes on the planet, with the father being the prince and his name is "Auzituck" in the book. In the sequel to the book, called "The Star Wars 8", the family has a new alias under "the Great Kaapauku tribe"
Admittedly, this is almost certainly no longer the official continuity.