" On the backside of the shambles be divers slaughterhouses and such like, pertaining to the Shambles and this is called Mount Godard Street. This streete goeth up to the North end of Iuie lane" (S. 315 and 345).
Seems to have been on the south side of Newgate Street.
The word "Goddard" is defined in Halliwell as "a fool," a kind of cup or goblet, and Stow says the street was so called of "Goddards mounting from the tappe to the "Table, from the table to the mouth and sometimes over the head" (S. 345).
A Dictionary of London. Henry A Harben. 1918.