Jacqualin is a rare and distinctive female given name of French origin, derived from the male name Jacquelin, itself a diminutive of Jacques, which means 'supplanter' or 'he who replaces'. The use of Jacqualin as a feminine name appears to be more prevalent in France during the Middle Ages. It has not gained significant popularity in recent times, making it an uncommon but intriguing choice for parents seeking a unique name for their daughter.
The name Jacqualin experienced periodic popularity with peaks in the late 1940s and early 1950s, but has since seen a steady decline, with only five births reported annually from the 1970s onwards until the mid-1990s.