A wizened adventurer from the Black Shroud, Isildaure found himself knee-deep in fatherhood once again upon assuming guardianship of his granddaughter, Alianne, after a tragic accident claimed the lives of his son and daughter-in-law. To help her cope with the sorrow of losing both parents, Isildaure embarked with Alianne upon a journey to explore the world. However, it was not long before his age forced him to retire begrudgingly.
Isildaure and Alianne meet the Warrior of Light at Sastasha's entrance. Later, they meet again with Warrior of Light in Tam-Tara Deepcroft where they almost died due to a mistake, and remind the Warrior of Light to "look before they leap" in dangerous places. In Copperbell Mines, Isildaure and Alianne found the bodies of the Dolorous Bear's party that had perished to the Giants in the mines, and suspect that this was a result of their overconfidence.
Eventually the Warrior of Light tries to recruit Isildaure and Alianne to join the ranks of the Crystal Braves. Isildaure was too old to continue his adventures but recommends that Alianne join them. Alianne agrees, but not before escorting her grandfather back home.
As soon as Isildaure heard about the betrayal of the Crystal Braves and that Alianne had been captured, Isildaure set out to help her but due to his age, when he arrived in Revenant's Toll everything had already been resolved. Alianne joined the Scions of the Seventh Dawn and Isildaure moved to the Rising Stones where he became friends with Homei Nagae.
After the liberation of Doma, the refugees in Mor Dhona returned to their homeland. Isildaure used his few energies and traveled to Doman Enclave to pay Homei a visit. He says that he would like to defend Eorzea with Alianne, but that he would only get in the way.
After the Scions of the Seventh Dawn disbanded, Alianne resumed her travels with Isildaure to collect information about the territories they passed through. At first they traveled to Kugane where they visited Homei and rested at the Bokaisen Hot Springs. Alianne planned next to travel to Doma and then make their way to Nagxia. Alianne says that the Eastern Alliance made arrangements for the trip, and that their guide would be someone named Atori.
Behind the scenes
- Encyclopædia Eorzea: The World of Final Fantasy XIV, p. 209
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest It's Probably Pirates.
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest Fire in the Gloom.
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest Into a Copper Hell.
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest Recruiting the Realm.
- Final Fantasy XIV: A Realm Reborn, Dialogue with Isildaure.
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest When the Dust Settles.
- Final Fantasy XIV: A Realm Reborn, Main Scenario Quest Endwalker.
- Final Fantasy XIV: A Realm Reborn, Dialogue with Alianne.