Marcellus is a distinctive boys' name in United States, ranking #732 in 2021 with 351 recorded births. The name reached its all-time peak in 2021 with 351 births ranking #732. Since 1996, the popularity has increased by 247.5%. In 2021, approximately 1 in every 4,981 boys born was named Marcellus. FALLING Recent data shows the name is currently falling.