Gaston, Duke of Orléans
In 1648, he took a doctorate in medicine at the University of Angers in Western France and from then on devoted himself entirely to the study of botany. He studied in Paris under the guidance of Vespasien Robin, botanist to the king of France, who introduced him to Gaston, Duke of Orléans. On Robin's recommendation, Morison became director of the Royal Gardens at Blois, Central France, a post which he subsequently held for ten years.