Kierst-Isel is a fictional princedom in Melanie Rawn's fantasy novels of the Dragon Prince and Dragon Star Trilogies. Kierst-Isel an island princedom, formed by the uniting of Kierst and Isel through Prince Arlis. For hundreds of years the princedoms of Kierst and Isel were at odds, nearly on the brink of war. The border between princedoms often wavered, and at the Rialla their Princes disagreed on principle. Due to Isel's support of High Prince Roelstra during the War of 704, Prince Saumer was highly 'encouraged' to marry his heir to one of Prince Volog of Kierst's daughters and to marry his daughter to Volog's heir. Years later after Volog's heir had a son, Saumer's heir died - or rather he was secretly murdered by Pandsala. This made the young Prince Arlis the heir to a united Kierst-Is