Do you have notes on the poem Laugharne Castle by John Idris Jones?

The poem is included in the Welsh Joint Education Committee publication 'Students' Book' by Roger Lane (Oxford U.P. 2003). It is on page 157. Some comments on it appear on page 156 and p158. The poem sees the remains of a castle as standing for a symbol of life and time. The castle was once occupied; time has changed that. The castle is 'jetsam': one on a ship, part of the ship's activities, a part of life, an object is then thrown overboard, unwanted, mere rubbish, and is carried ashore, where it remains, a reminder of how it was once part of an active life setting. Abandonment yet survival is the central theme of the poem; the imperishable; a remainder; the left-over. Life leaves some evidence after itself. The second stanza refer to two writers, Dylan Thomas and Richard Hughes, who lived close to the castle. "...it writes its own history" echoes the writing work of these two, the creative act, which the castle is also in a sense doing because it is part of something creative - a dwelling originally, part of the creative life. Although it is 'dead' it is made in to something alive when the onlooker imagines how it has been and what it stood for.