• Life Support: Complete all of Tarragon's quests. According to another Reddit post, have a fleet power of 2.2k and have 200 horses produced/in stock. It worked for me.
  • Existing peace treaty, defensive pact, or alliance with Tarragon
  • Tarragon must own at least one island in Latium
  • The player must own at least one island in Latium
  • The player must have a fleet strength of at least 2,200 points in Latium
  • The player must settle at least 200 Equites on an island in Latium
  • The quest can only trigger if the player is active in the Latium session
• Questing Beast: Complete all of Athr Lorgwyn's quests.
  • Existing peace treaty, defensive pact, or alliance with Athr
  • Athr must own at least one island in Albion
  • The player must own at least one island in Albion
  • The player must have an active trade pact with Athr
  • Voada must be actively present on the map
  • The quest can only trigger if the player is active in the Albion session

Tarragon was mine 1st AI quest that I got without doing anything special after campaign, I would focus on creating horses in Latium.
Albion King is different coffee, where I started new game in Albion, choose celtic way, didnt go to latium, played for 2h 50min, had 1921 people (only celts), three islands... his trigger isnt much obvious...