Ieuan is a distinctive boys' name in England & Wales, ranking #616 in 2014 with 56 recorded births. The name reached its all-time peak in 1999 with 168 births ranking #193. Since 1996, the popularity has decreased by 62.2%. In 2014, approximately 1 in every 5,931 boys born was named Ieuan. FALLING Recent data shows the name is currently falling.