The northern portion, bordering on Normandy, was sometimes alienated as the County of Chartres, but the Counts of Blois who possessed it did not use a separate title for it.
Sjeverni dio, koji je graničio s Normandijom, katkad je sebi preuzimala grofovija Chartres, no grofovi Bloisa koji su ga posjedovali nisu upotrebljavali posebni naslov za nj.