Marcellus is a distinctive boys' name in United States, ranking #1326 in 1999 with 91 recorded births. This places Marcellus in the top 11% of ranked US boys' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2021 with 351 births ranking #732. In 1999, approximately 1 in every 21,100 boys born was named Marcellus. FALLING Recent data shows the name is currently falling.