Geraldyn is an uncommon given name, often used for females but sometimes also encountered among males. It originates from the Germanic elements ger 'spear' and walth 'power', combining to mean 'spear power'. The name gained some popularity in the mid-20th century but has since become quite rare.
The name Geraldyn was popular during the early to mid-20th century with peaks in 1922, 1925, and 1928, but has seen a resurgence since 2004 with notable years being 2004, 2011, and 2015. Overall, there have been 71 births named Geraldyn from 1920 to 2018.