Born in 2985 3A, Moro was the son of Peony and Milo Burrows. His siblings were Mosco, Myrtle, and Minto Burrows. At the age of 5, Moro and his siblings remained hidden while their parents were enslaved by the Ruffians led by Bill Ruffin. However, on October 5, an open revolt begun when Gandalf arrived to put an end to the Ruffians rule.
A month later, Peony and Milo joined the Shire Company and left Mosco to take care of Moro, Myrtle and Minto. However, they were deeply upset when their parents were killed during the final encounter in Mordor. Moro lived the rest of his life during the Fourth Age and married an unnamed woman.