Gethin is a moderately popular boys' name in England & Wales, ranking #388 in 2005 with 78 recorded births. The name reached its all-time peak in 2008 with 159 births ranking #272. Since 1996, the popularity has increased by 105.3%. In 2005, approximately 1 in every 3,967 boys born was named Gethin. FALLING Recent data shows the name is currently falling.