The Pillar of Eliseg, also known as Elise's Pillar, stands near Valle Crucis Abbey, Denbighshire. It was erected by Cyngen ap Cadell (died 855), king of Powys in honour of his great-grandfather Elisedd ap Gwylog. The form Eliseg found on the pillar is assumed to be a mistake by the carver of the inscription.
Whilst the pillar itself dates to the 9th century, the large artificial mound is thought to be significantly older, possibly prehistoric. Certainly the mound can be dated to the Bronze Age.
The Latin inscription consisted of some thirty-one lines of insular script. It not only mentioned several individuals described in the Historia Britonum, but also complemented the information presented in that text. The inscription is one of the longest surviving inscriptions from pre-Viking Wales.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.