The first castle at Raglan was a Norman motte and bailey which survived until the early 15th century when it came into the hands of Sir William ap Thomas, a Welsh knight who had fought at Agincourt (1415). About 1435 he began building the Great Tower, an unusual hexagonal keep, surrounded by its own moat. Mor info from: http://www.castlexplorer.co.uk/wales/raglan/raglan.php
The web's original travel blog
.%20About%201435%20he%20began%20building%20the%20Great%20Tower%2C%20an%20unusual%20hexagonal%20keep%2C%20surrounded%20by%20its%20own%20moat.%0D%0AMor%20info%20from%3A%0D%0Ahttp%3A%2F%2Fwww.castlexplorer.co.uk%2Fwales%2Fraglan%2Fraglan.php){kind=link}