Gethin is a moderately popular boys' name in England & Wales, ranking #416 in 2006 with 80 recorded births. The name reached its all-time peak in 2008 with 159 births ranking #272. Since 1996, the popularity has increased by 110.5%. In 2006, approximately 1 in every 4,004 boys born was named Gethin. FALLING Recent data shows the name is currently falling.