Aubyn is an uncommon, unisex given name of Welsh origin, derived from the personal name 'Ap Huw', which means 'son of Huw'. Huw itself is a shortened form of the medieval Welsh name 'Hywel', which is believed to have come from the Proto-Celtic root word 'Ugio-', meaning 'proud' or 'eminent'. The name Aubyn has gained some popularity in recent years, likely due to its distinctive sound and its association with the prominent English writer, Edward St. Aubyn.
"While Aubyn had a notable run of popularity with five births each year from 1984 to 2001, it peaked briefly at six births in 2003 and again in 2010 before dropping back down to five in 2013. Overall, the name Aubyn has seen 37 newborns since 1984."