Unidentified Irmenu nobleman

Lord Mirdalan was a Human male Irmenu lord of Mirdalan, and the father of a daughter who held the title of princess. When Lord Mirdalan's daughter fell in love with Walon Vau, the son of an Irmenu admiral and count, both the Lord and Vau's father refused to consent to the match. The two lovers attempted to defy their parents' will, but their rebellion ended with Lord Mirdalan's daughter in an Imperius convent and the young Walon Vau's exile from Irmenu.

Following his exile, Walon Vau went on to become a Mandalorian. At some point in time during his new life, Vau came into possession of a strill—a Mandalorian hunting animal—that he named Lord Mirdalan.

Behind the scenes
Lord Mirdalan was first introduced to Star Wars canon in the fifth installment of Jason Fry's official Star Wars Blog series, The Essential Guide to Warfare: Author's Cut.