*some guy in leather armour who's often chopping wood or in the inn pays you big money to pass some ashes to that elf (runil?) even when runil is standing next to him.

Find Runil's journal. On first entering falkreath he'll be hanging around the graveyard talking to some people. It's one of those radiant quests that sometimes won't trigger if you've got another running

Some guy who use to be jarl hangs around in the inn in the latter part of the day and gets you to steal a note