Little Jack Horner
Sat in a corner,
Eating a mincemeat pie.
He stuck in his thumb
And pulled out a plum,
And said, "What a good boy am I!"

According to legend, Little Jack Horner was actually Thomas Horner, steward to the Abbot of Glastonbury during the reign of King Henry VIII. Rumor had it that the inquisitive king would soon be reaching for some Glastonbury holdings. The nervous Abbot, hoping to appease the royal appetite, sent the king a special gift: a pie containing twelve deeds to manor houses. On his way to London, the not-so-loyal courier Horner stuck his thumb into the pie and extracted the deed for Mells Manor, a plum piece of real estate, where his descendants live to this day.
from.... The Great American Baby Almanac