hi dose friendly npc re-spawn like other npc when they spawn after the quest is cleared ?
dragons are wasting them i guess some of may have good quests

As far as I know, named NPCs do not respawn. If they are killed, they stay dead, whether they were friendly or not.

Named NPCs who die do not (normally) respawn in the game
Lod in Falkreath is a good example.

well i will need to resurrect them then , i dont want broken quests .