[1] The Hospital of Sampson in Constantinople was granted estates at Garella by Pope Innocent III in 1210, a deed re-confirmed in 1244.
[4] A synodal act of September 1324 records the dues owed by the archbishopric to the Patriarchate of Constantinople as 24 hyperpyra.
[3] Sometime around 1329/1331, the see of Garella was awarded jointly with that of Lopadion (in Bithynia, vacant due to the Ottoman conquest of the area).
He is the last known incumbent; as the area was devastated by Turkish raiders and the subsequent Ottoman conquest, the see was probably abolished soon after.
The ruins preserve remains of three towers (east, southeast, and west), as well as parts of the curtain wall.
Based on the architectural characteristics, and the presence of large amounts of pottery shards from the middle Byzantine period, the castle is probably to be dated in the 12th century.