Maryland, USA, 1904-present
The Flag of Maryland is the only state flag in the United States to be based on English heraldry. The Maryland colony was founded by Cecilius Calvert, 2nd Baron Baltimore, hence the use of his coat of arms in the flag. At first, only the gold and black Calvert arms were associated with Maryland, being reintroduced in 1854.
The red and white Crossland arms, which belonged to the family of Calvert’s paternal grandmother, gained popularity during the American Civil War, when Maryland remained with the Union despite many citizens’ support for the Confederacy. Those who supported the Confederacy adopted the Crossland banner
The flag in its present form was first flown in 1880 in Baltimore, Maryland, at a parade marking the 150th anniversary of the founding of Baltimore. It was not officially adopted as the state flag until 1904.
Easily the best state flag.