The red saltire also features on the flags of Jersey, Alabama and Florida

‘Ddraig Goch’ was adopted as the official national flag in 1959.

The cross is St David. The red dragon only became the flag ‘of Wales’ at a much later date - it was carried onto the battlefield at Bosworth by Henry Tudor - who was about to become Henry VII.

When the King is in London his ‘Court’ occupies both buildings: the ceremonial HQ of the monarchy is the Court of St James - that palace is the red brick next to CH

My apologies - the Brits are too casual with the Holland/Netherlands conflation!

It replaced this. Fun fact, the Stars & Stripes also began life as a defaced British red ensign.

The flag of Washington DC is based on the arms of George Washington’s English ancestors