Umble Pie

Can anyone tell me the origin of this phrase?
Also could you tell me where to look to prove the
origin of the phrase?

Thank You
Brent Schlachter

HUMBLE PIE This explanation of "humble pie" comes from the Morris Dictionary of Word and Phrase Origins by William and Mary Morris (second edition, HarperCollins, Publishers). A side note: my family comes from southern West Virginia. The older generation always pronounced humble as 'umble. I wonder if that's something we brought with us from England.

"humble pie. Here we have a play upon words which dates back to the time of William the Conqueror. First, the pie referred to in 'eating humble pie' was really umble pie, made from the umbles - heart, liver and gizzard - of a deer. It was made to be eaten by servants and huntsmen, while the lord of the manor and his guests dined on venison. Thus a person who had to eat umble pie was in a position of inferiority -- one who had to humble himself before his betters. The pun resulting from umble and humble is even more precise when you recall that in several British dialects - notably Cockney - the h in humble would be silent. Actually, the two words come from quite different roots, humble from the Latin 'humilis'(low or slight), and 'umbie' from the Latin 'lumulus' (loin)."