Ieuan is a moderately popular boys' name in England & Wales, ranking #239 in 2002 with 124 recorded births. The name reached its all-time peak in 1999 with 168 births ranking #193. Since 1996, the popularity has decreased by 16.2%. In 2002, approximately 1 in every 2,325 boys born was named Ieuan. FALLING Recent data shows the name is currently falling.