Welsh flag

Scoland and England was fought in history. After the two country setting up a country.  The northern Ireland was the England encroachment Ireland get land territory. Moreover, Welsh always belong to England land.   Welsh can be independent, because is belong to England royal land in history. So general prince all can as Welsh infante and not necessary add Welsh in England. Welsh was different from England the same with station and only belong to like a vassal state. Consequence, Welsh flag different from the England and not necessary included in England flag.