The flag of territory of aproximate present-day Slovakia from the 14th century. There is a golden doublecross at the golden triple-hill in the red field. The flag was created in the 1301, during the rule of the Louis V., whose protage was the ruler of upper part of the kingdom, Matúš Čák Trenčianský and this flag was de facto symbol of Matúš's territory.
Own work
Germenfer