The Undead General

All three versions of this quest need the same thing:
 * Kill the (95 Crown Elite)

The is on the island just across from the gate, next to the bonfire. I guess he needs to warm his bones.

All quest triads start with the non-repeatable quest, which unlocks both of the repeatable quests. Almost, but not all, triad repeatable quests can be performed and turned in at the same time (this one can).