Biograph of Phantom F. Harlock
As far as I know, Harlock was taught sword play by a man named Milos, and was students with another man named Darghund.

There is where he met his lady love, Maya.

Milos talks about this in Eternity Comics, Captian Harlock #2: "You two were the only students I sensed worthy of my full attention. But it seems that I was not the only one paying you attention. The country had given you both much pease . . . . . . but peace, sadly, never lasts forever."
The information taken is from Arcadia of my Youth, and the comics I own done by Ben Dunn. There's nothing wrong with those!
Harlock's fencing teacher, Milos