For sothe he was a worthy man with-alle,
But, sooth to seyn, I noot how men hym calle.
(= For truly he was worthy man with everyone [he met] / But, to tell the truth, I don’t know what men call him.)
Chaucer’s steady repetition of ‘worthy’ makes the reader think it’s got a shade of irony— he’s perhaps mimicking all the ways the Merchant tries to appear worthy, even though he’s engaging in scurrilous financial transactions to keep his head above water.
Chaucer doesn’t seem to know what most of the pilgrims are called, but his explicit statement about the Merchant adds to his image of deliberate concealment.
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