The name Deleon, of Spanish origin, is derived from the Latin 'Dominus Leonis', meaning 'Lord Lion'. It was traditionally used as a title or nickname for someone who exhibited qualities associated with a lion, such as strength and courage. In Spain, it has been used both as a given name and a surname for centuries.
The name Deleon experienced significant fluctuations in popularity over the years, with a notable increase beginning around the mid-1970s and peaking in the late 1980s to early 1990s. However, it has since declined and stabilized at a lower level in recent years.