Marcelus is a distinctive boys' name in United States, ranking #10335 in 2013 with 7 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3775. Since 1996, the popularity has decreased by 61.1%. In 2013, approximately 1 in every 270,179 boys born was named Marcelus. FALLING Recent data shows the name is currently falling.