Nexus Mods - "Flute Finder - A Skyrim GPS Tracker" adds quest markers to over 100 different NPCs in the game, so you can keep track of followers, children, and many other
So i got a mod that shows quest markers for the 'No Stone Unturned' quest... : r/skyrim
Wandum has a quest marker, but he does not give any : r/ElderScrollsBlades