Geraldyne, derived from the Old German name Gerhard, meaning "strong spear", is an infrequently used feminine given name of Germanic origin. It was popularized during the Middle Ages but has since become quite rare. The name Geraldyne often carries a sense of vintage charm and uniqueness due to its rarity in modern times.
"The name Geraldyne experienced significant popularity during the early to mid-20th century, with peaks in the 1920s and 1930s, particularly notable being 27 births in 1924. However, its usage steadily declined thereafter, with only occasional occurrences in recent years."