Marcellus is a distinctive boys' name in United States, ranking #742 in 2020 with 328 recorded births. The name reached its all-time peak in 2021 with 351 births ranking #732. Since 1996, the popularity has increased by 224.8%. In 2020, approximately 1 in every 5,259 boys born was named Marcellus. FALLING Recent data shows the name is currently falling.