"he blunders and strays from the truth in the most central feature of the whole history"

   Quixote ridicules the 'Avellaneda' version of his history, pointing out that the author names Sancho's wife 'Mari Gutiérrez' rather than 'Teresa Panza'.  Having previously given her name as both 'Mari' and 'Juana' Gutiérrez, and left the inconsistencies uncorrected in further editions of the book, Cervantes is here clearly satirising his own writing as much as his rival's.

See note to page 510