Діан де Салум

The fourth prince of the Saloum Kingdom, and one of Lloyd's older brothers. While he had a fondness for magic from an early age, due to a lack of talent, at age 10 he chose to pursue blacksmithing instead, traveling to the neighboring kingdom of Bartram for his education in the subject. His dream is to create swords enchanted with magical power, with an eye towards establishing a Magic Swordsman Corps in Saloum. A dedicated craftsman with a rough edge, but a kind heart.

(Source: I Was Reincarnated as the 7th Prince so I Can Take My Time Perfecting My Magical Ability Official Site)