Ieuan is a distinctive boys' name in England & Wales, ranking #692 in 2015 with 48 recorded births. The name reached its all-time peak in 1999 with 168 births ranking #193. Since 1996, the popularity has decreased by 67.6%. In 2015, approximately 1 in every 6,942 boys born was named Ieuan. FALLING Recent data shows the name is currently falling.