Gus is of American origin, derived from the Latin 'Augustus', meaning 'great' or 'majestic'. It's traditionally a nickname for Augustine, but has since evolved into a standalone given name. Gus gained popularity in the late 19th and early 20th centuries, peaking during the mid-20th century before experiencing a resurgence in recent years.
"The name Gus was quite popular back in 1924 with five recorded births that year."