The name Gratian originates from the Roman name Gratianus, derived from the Latin word 'gratus', meaning 'grateful'. It carries connotations of thankfulness and appreciation. Historically, the name is associated with Saint Gratian, the first bishop of Tours in the 4th century, and Gratian, a Roman emperor who ruled the Western Roman Empire from 367 to 383. The name reflects a legacy of leadership and religious significance.