Ralestone Luck by Andre Norton - Audiobook

Ralestone Luck by Andre Norton.
Read in English by Gabriel Glenn.
Rupert Ralestone is officially the Marquess of Lorne--but with no family money or prestige, the title is worthless. He and his younger brother and sister return to the old family homestead--Pirate's Haven. Their only hope is to find the family's talisman, a great sword, and restore it to its proper place.