Marcelus is a distinctive boys' name in United States, ranking #6427 in 1997 with 9 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3775. Since 1996, the popularity has decreased by 50.0%. In 1997, approximately 1 in every 209,454 boys born was named Marcelus. FALLING Recent data shows the name is currently falling.