Marcelus is a distinctive boys' name in United States, ranking #6861 in 2002 with 10 recorded births. The name reached its all-time peak in 1996 with 18 births ranking #3775. Since 1996, the popularity has decreased by 44.4%. In 2002, approximately 1 in every 194,147 boys born was named Marcelus. FALLING Recent data shows the name is currently falling.