The Marshal of the College is the person chosen to direct formal events occurring on campus, most notably Commencement. Duties of the Marshal can include leading the Alma Mater, directing people to their seats, and guiding the students to walk/gather in an organized manner.

Though modern-day marshals are typically professors who have their duties limited to solely directing commencement proceedings, the early Marshal of the College participated in events year round. Marshals were also students, elected while still undergraduates of the school. Their duties included leading processions during funerals and organizing large intercollegiate meetings during the school year.

In both past and modern times, the Marshal for that year's commencement ceremony has been listed alongside their Assistant Marshals in the commencement program.

Trinity College Commencement Program, 2019, p. 1.

The Trinity Tablet, Commencement Special, June 26-30, 1898, p. 287.

The Trinity Tablet, Commencement Issue, June 23, 1895, pp. 301-302.

The Trinity Tablet, April 27, 1878, p. 59.