Christmas Carol
Here's a Christmas song from Popular Music of the Olden Time (William Chapell, 1859), which gives it a 1460 date (and also includes a contrafact, which is a drinking song...)
Noel, noel, noel, noel, noel, noel, noel
This is the salutation of the angel Gabriel
Tidings true there be come new, sent from the Trinity
By Gabriel to Nazareth city of Galilee
A clean maiden and pure virgin, through her humility
Has conceived the person second in Deity.