I notice this flag is identified as the ‘First Navy Ensign’ or ‘Cambridge Flag.’ It looks identical to the Grand Union Flag. There were of course other flags in the Colonial days which included the Union Jack.
It’s too bad that we have no real emblem these days honoring our origins. Or it may be that some organization of Anglo-Americans somewhere does display a flag or emblem of some kind, but there are none in my area that I know. Maybe that’s why some Americans of different origins say that Anglo-Saxons ‘have no culture.’
One reason for that is that our ancestors’ culture became the basis for our American culture. There are things that we don’t give much thought to: the nursery rhymes and fairy-tales we all learned; a lot of our folk-sayings, our culinary habits (in some places).
Since we are likely to get swept away culturally we need to try to preserve what is left.