In February 1477, Margery Brews, a Norfolk gentlewoman, sent her beloved John Paston two Valentine letters. They were written on the eve of their marriage and, besides expressing Margery's undying love for John, reveal the couple's concerns for their future.
The letter (written on Margery's behalf by Thomas Kela, a clerk of Sir Thomas Brews), is signed
"Be your Voluntyne / Mergery Brews"
Read the whole story include image of one letter here.
And Happy Valentine