Boldog

Boldog was a great Orc mentioned briefly in Beren and Lúthien.

Beren and Lúthien (2017)
"Boldog he sent, but Boldog was slain: strange ye were not in Boldog's train."

- Sauron/Thû to the Orc-disguised Beren, Finrod and their companions Boldog was a great Orc chieftain in the service of Thû and a captain in Morgoth's army. He was sent by the dark lord Morgoth to bring back Lúthien daughter of King Thingol. He led a mighty host of Orcs from Angband in attacking Doriath, but they were defeated and Boldog himself was slain by Thingol.

When they were captured by Thû's guards and brought before the dark lord of Tol-In Gaurhoth himself, the Orc-disguised Beren, Finrod Feleagund and their companions claimed to be soldiers rallied by Boldog. The Necromancer however revealed that the chieftain had been slain and, suspecting that they were not Orcs, commented that it was strange that they had not been with Boldog.

Appendices
"Boldog - A captain of Orcs"