King Croacus III

From the Super Mario Wiki

King Croacus III was the third ruler of the Floro Sapiens. He became the youngest king ever, at age 1 when his mother wilted. He was afflicted with a disease at birth, which made him weak and sickly. Due to his young age, a regent ruled in his place. He had a great talent for art and poetry, releasing a book of poems, Ice Rose, at age 37. He wilted at age 88 for unknown reasons, but some suspected a conspiracy. Due to his early death, he did not change the Flora Kingdom much.