In the prologue to the Canterbury Tales, Chaucer’s prioress is accused of speaking an inferior version of French learned in Stratford rather than in Paris:
Frenssh she spak ful faire and fetisly,
After the scole of Stratford att Bowe,
For Frenssh of Parys was to hire unknowne.
“And she spoke French fluently and elegantly,
After the school of Stratford-at-Bow,
For French of Paris was her her unknown.)