Thank you for this video!
I've never been on Astypalaia and I want to visit it badly!
Astypalaia was under the ruling of Querini family after the 4th Crusade (although according to some rources, they became rulers much later, in the 15th century). Querini were among the most important Venetians families. The island was conquered by the Ottomans in 1527 but in the late 18th century, a Querini member decided to add "Stampalia" (from Astypalaia) to his last name, to distinguish himself from another branch of the family.
I've never thought to contribute to this topic because castles in Greece are mostly ruined but here it is, a video from amazing Mystras!
I mentioned the area a few days ago, in the greek board. Mystras is in Peloponnese, near Sparta. It was original founded in the middle of 13th century, by the Franks, but 10 years later it was passed to the Byzantium. In 1830, the regency gave orders to destroy the city in order to force the people to leave the unapproachable place and go down to the valley. https://www.youtube.com/watch?v=7UDwHGecKJI