January is named after the two headed god, Janus. He was considered the god of the doorway. The name origin can be traced back to Roman mythology. It comes from the Latin word ianua meaning door. January is considered the door to the new year. The word janitor can also be traced to the god Janus.
In Finnish, the month is called tammikuu, meaning the month of the oak, but the original meaning was the month of the heart of winter.
In Czech, this month is called leden, meaning appropriately the ice month.
January became the first month of the year in 700 BC. The Roman king, Numa Pompilus added it and Feb. to the calendar. He also moved the start of the year from March to January.
The Saxons called the month 'wulf-month; meaning the month of the wolf.