His exact burial place remained unknown until it was re-discovered in 1818 .
Francis was buried on May 25 , 1230 , under the Lower Basilica , but his tomb was soon hidden on orders of Brother Elias to protect it from Saracen invaders .
Francis ' exact burial place remained unknown until it was re-discovered in 1818 .
Francis was buried on May 25 , 1230 , under the Lower Basilica , but his tomb was soon hidden on orders of Brother Elias to protect it from Saracen invaders .