Where did little jack horner sit?

According to our family history, the story of little Jack Horner does indeed refer to the trip taken by John Horner to London and the family estate Mells Park in Somerset, England. He was dispatched by the Bishop of Glastonbury with a gift (pie) for Henry VIII, inside which were the deeds to 12 manors owned by the abby. (The deed to Mells Park was included). Jack was knighted and Mells Park has been in the family since. (Sir Francis Horner is also a relative.)