This church should be the first location you run into from the Lake-Facing Cliffs Site of Grace. There is a Sacred Tear here to prepare you for Liurna better. You can also find the NPC Thops, a student at the Academy of Raya Lucaria.

You can unlock him as a merchant for only 10 Runes —he sells a few low-level sorceries. Check out our Thops Questline guide to learn more.