I should pick up my Warsong and beat it so I can put my hands on the Langrisser II patch... Or maybe I should wait even more now .
Langrisser I and II aren't really related, storyline-wise. I mean, they have common elements, but no characters from the first one (aside from perhaps Lushiris, the Goddess of Light) show up in Langrisser II. Elwin is a descendant of the lead character from the first game. That's about it.