Complex sentence: The Kotsinos castle was built in 1361 and in 1408 was received under the widow of John VII Palaiologos of the Palaiologos dynasty Irene Gattilusio in which she lived and died there in 1440, under the monastic name Eugenia.
Split into simpler sentences: The Kotsinos castle was built in 1361 and in 1408 was received under the widow of John VII Palaiologos of the Palaiologos dynasty Irene Gattilusio. She lived and died there in 1440, under the monastic name Eugenia.