Most were named for Greek/Roman gods, as were days if the week. January - the god Janus February - from 'februum' meaning 'purification' from the rituals of purification March - the Roman god of war Mars April - originally Aprillis, commonly thought to be from 'aperire' meaning 'to open'. Possibly from Aphrilis for goddess Aphrodite who held April as sacred May - greek goddess Maia June - goddess Juno July - in honor of Julius Caeser as it was his birth month August - originally Sextillus because it was once the dixth month before the calendar was recalibrated, it was renamed to honor Augustus Caesar September - 'septem' meaning 'seven' as it was the seventh month at one point. October - 'octo' meaning 'eight' as it was once the eighth month November - 'novem' meaning 'nine' as it was once the nineth month December - 'decem' meaning 'tenth' as it was once the tenth month --- Monday - from Middle English 'Monenday' meaning Moon Day Tuesday - middle english 'Tiw's Day' for the scandinavian gid of war Tiw or Tyr - related to Mars Wednesday - old english Wodensdaeg, middle english Wednesdei fir the god scandenavian gid Woden - related to Mercury Thursday - middle english 'Thuresday' or Thor's Day. Friday - old english 'frigedaeg' possibly related to scandenavian goddess Freya or to the godess Frigga Saturday - god Saturn Sunday - 'sunnidai' or 'Sunnendag' meaning 'Sun's Day'