Latenna the Albinauric

Clear the Lakeside Crystal CaveGrace dungeon and exit through the back to find Latenna at the Slumbering Wolf's ShackGrace. Speak to her there.

Find Albus hidden inside an illusory pot in the Village of the AlbinauricsGrace to receive the first Haligtree Medallion half.

Speak with Latenna again after you've acquired the medallion piece to receive Latenna's Ashes.

Reach the Mountaintops of the GiantsRegion, where Latenna's voice will direct you north towards Castle SolDungeon.

Defeat Commander Niall in Castle SolDungeon to find the other half of the Haligtree Medallion in the tower behind him.

Select “join secret medallion” at the Grand Lift of RoldGrace to enter the Consecrated SnowfieldGrace.

Find the Apostate DerelictGrace church in the far northwest corner of Consecrated SnowfieldGrace. Interact with the giant Albinauric woman to summon Latenna. Exhaust her dialogue to receive a Somber Ancient Dragon Smithing Stone.