Ah, you beat me to it.
PC drow that could wield two weapons where put by Gygax into the original Unearthed Arcana. (reasons: money, funny how that works). At that time Rangers added their level to damage versus a whole range of humanoid and giant opponents. Make another attack, say with an off hand weapon, also add the damage...
So it was an optimized character, as we would say these days. When doing the 2e PHB, they had no intention of putting in drow, but yes did add dual wielding for Drizz't.
Actually, duel wielding does synergize nicely with the 5e ranger's hunter's mark. At least the bonus damage does. Concentration, not so much.