Calendar Name Origins - Names of Months

ME = Middle English
OE = Old English
OF = Old French
OHG = Old High German


January - ME Januari(us), OE Januarius, translation of Latin Januarius, named after JANUS, god of beginnings.

February - ME OE Februarius from Latin Februarius, named for Februa, the feast of purification.

March - ME March(e), from Latin Martius, (month of) Mars.

April - ME Averil, OF Avril, Latin Aprilis mensis (month). The name may derive from the Greek goddess of love, Aphrodite.

May - ME OE Maius, Latin Maius mensis (month), from the Greek Maia, goddess of spring (growth).

June - ME Jun(e), OE Iunius, from Latin mensis Junius, named after the goddess Juno, Queen of the gods.

July - ME Julie, OE Julius, from Latin Julius (Caesar) after whom it was named in 44 BC. The original name was quintilis, fifth month in the early Roman calendar.

August - ME OE Agustus from Latin Augustus (Caesar) 8 BC. The original name was sextilis, sixth month in the early Roman calendar.

September - ME Septembre from Latin September, seventh month in the early Roman calendar

October - ME OE from Latin October, eighth month in the early Roman calendar

November - ME OE from Latin November, ninth month of the early Roman calendar, from novem NINE

December - ME Decembre from OF and Latin December, tenth month of the early Roman calendar (decem TEN + membri from mens MONTH + ri suffix).

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Source: http://www.calendar-origins.com/calendar-name-origins.html