Gaytha, of Old English origin, is a unique and distinctive female given name that was once quite popular but has since become more rare. It is believed to have been derived from the personal name Gaetha, which was used in England during the Middle Ages. The name Gaetha itself may have been derived from an Old Norse male given name Gæiþi, meaning 'leader'. Interestingly, Gaytha has also been associated with a place name in Lincolnshire, England, known as Gaythorne. Throughout history, there have been several notable individuals bearing the name Gaytha, including Gaytha Lees, a prominent American socialite and philanthropist during the early 20th century.
The name Gaytha experienced peaks in popularity during the early to mid-20th century, with noticeable increases around the late 1930s and early 1940s, peaking at 11 births in 1947. However, it seems the name's appeal waned significantly after that, as seen by the decrease in annual birth counts thereafter.