Ġēolamonaþ
Ġēolamōnaþ or Ȝēolamōnaþ was the Anglo-Saxon name for the month of both December and January. The Anglo-Saxon scholar Bede explains in his treatise De temporum ratione that the entire winter solstice period was known as Ġēola. Later on, December became known as Ǣrra-ġēolamōnaþ and January became known as Æfterra-ġēolamōnaþ, as this later Old English passage points out:
Which translates: