From the Greek name Doris, which meant "Dorian woman". The Dorians were a Greek tribe who occupied the Peloponnese starting in the 12th century BC. In Greek mythology Doris was a sea nymph, one of the many children of Oceanus and Tethys. It began to be used as an English name in the 19th century. A famous bearer is the American actress Doris Day (1924-2019).