The term "Neustria" took on the meaning of "land between the Seine and Loire" when it was given as a regnum (kingdom) by Charlemagne to his second son, Charles the Younger, in 790.
Mõiste "Neustria" võttis tähenduse "maa Seine ja Loire vahel", kui see anti aastal 790 regnumina (kuningriik) Karl Suure poolt tema teisele pojale Karl Nooremale.