Gethin is a moderately popular boys' name in England & Wales, ranking #453 in 2003 with 54 recorded births. The name reached its all-time peak in 2008 with 159 births ranking #272. Since 1996, the popularity has increased by 42.1%. In 2003, approximately 1 in every 5,547 boys born was named Gethin. FALLING Recent data shows the name is currently falling.