A look into Grisha's memories shows Eren the many secrets his father was hiding, including one which led to his mother's demise.
The Eldian King at the time erected
three walls on the island of Paradis
شيّد الملك الإلديّ آنذاك ثلاثة أسوار 
على جزيرة بارادي
Der damalige König von Eldia
El rey de Eldia construyó tres murallas
en la isla de Paradis
El rey de Eldia construyó tres murallas
en la isla de Paradis
Le monarque eldien de l’époque
Il re di Eldia allora eresse
tre cinte di mura sull'isola di Paradis,
O rei de Eldia na época construiu
três muralhas na ilha da Paradis
Тогдашний эльдийский король