I'd like to note that one of the hallmarks of what is known as the "English filter" is the attempt to deny any legitimacy to any element of Celtic civilization, culture or history.
We know all about the "English filter" these days and most knowledgeable people are instantly prepared to refute or rebut it as required.
English is now unfashionable, and Celtic is now fashionable. I prefer to take no part in PC. My idiotic nationalist Irish relatives spurn Christianity, and give their children names like "Orla." It reminds of nothing so much as the Nazified Germans of a couple of generations ago.
No doubt the English treated my Irish people abominably. But that does not mean that humanity does not owe the English an enormous debt for their other deeds..
Blacks in this country seem, for whatever reason, unable to recognize this truth about whites in this country. I refuse to share their error.