Where does “pardon mon français” come from?

pardon mon français (English) comes from English francais, from French français, from Middle French françois, from Old French françois, from Old French -ois, from Latin -ensis, from Latin arvum, from Latin colō — to turn.

Ancestry of “pardon mon français”, step by step

pardon mon français traces back through 3 separate lines of ancestry.

via English francais

StepLanguageWordMeaning
1EnglishfrancaisFrench
2FrenchfrançaisFrench; Franco-American or Francophone
3Middle FrenchfrançoisAlternative form of françoys
4Old FrenchfrançoisFrench; the French language
5Old French-oisused to form nationalities; used to form names of...
6Latin-ensisOf or from
7Latinarvumfield; farm land
8Latincolōto cultivate the land, till, tend, take care of a field or garden
9Latinquelō
10Proto-Italickʷelōto inhabit
11Proto-Indo-Europeankʷéleti
12Proto-Indo-Europeankʷel-to turn

via English Mon

StepLanguageWordMeaning
1EnglishMonAbbreviation of Monday; A member of a people...
2EnglishmonsterA terrifying and dangerous creature; A bizarre or...
3Middle EnglishmonstreA monster or beast; a horrific or frightening...
4Old Frenchmonstremonster
5Latinmōnstruma divine omen indicating misfortune, an evil omen, portent
6Proto-Italicmonestrom

via English pardon my French

StepLanguageWordMeaning
1Englishpardon my FrenchTo excuse the speaker's frankness of expression or profanity
Every word from Proto-Indo-European kʷel-