The view of the British nobility was weird. Most Brit nobles are the descendants of mediaeval robber barons.
Given the way the Lords spread their DNA around I reckon half the "British" (as opposed to recent immigrants) can claim to have a "noble" in their bloodline.
Don't forget that William the Conquerer gave land to everyone who supported him (the Saxons losing it all) and then we got the Droit de Seigneur which, not legal in later years, existed in stately homes into probably the 1800s, the brides having become chambermaids etc.
"mediaeval robber barons"; surely that is a more truthful name for the nobles?