Selwyn is a distinctive boys' name in United States, ranking #7725 in 2003 with 9 recorded births. The name reached its all-time peak in 1998 with 16 births ranking #4376. Since 1996, the popularity has decreased by 18.2%. In 2003, approximately 1 in every 219,474 boys born was named Selwyn. FALLING Recent data shows the name is currently falling.