Marcelus is a distinctive boys' name in United States, ranking #11733 in 2012 with 6 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3775. Since 1996, the popularity has decreased by 66.7%. In 2012, approximately 1 in every 316,104 boys born was named Marcelus. FALLING Recent data shows the name is currently falling.