do any people in current times speak old japanese?

hello, someone i know claims to speak "archaic japanese" from the edo period (or at least something similar to it?) because they descend from a lineage of samurai. could this really be true? im not japanese at all, so my intuition could be wrong, but i haven't heard of anything like that existing. i asked "do you say degozaru" and they said yes, when speaking to their grandma