Gethin is a moderately popular boys' name in England & Wales, ranking #328 in 2011 with 135 recorded births. The name reached its all-time peak in 2008 with 159 births ranking #272. Since 1996, the popularity has increased by 255.3%. In 2011, approximately 1 in every 2,562 boys born was named Gethin. FALLING Recent data shows the name is currently falling.