'Frenssh' as it was 'spak' in medieval England - Medieval manuscripts blog
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 atte Bowe, For Frenssh of Parys was to hire unknowe. (And she spoke...
Source: blogs.bl.uk