sSo I spent a little time - piecing together different quotes to prove a point. The point being that the "various" english royal families since 1066 have in fact been the same family, changing names - or fighting with itself. Enjoy.
(House of) Wessex (519 - 1066) merged with (house of) Godwin (? - 1066) when Godwin's daughter married Edward the Confessor and he died in 1066. The wife's brother took over and reigned from 6 January 1066 to 14 October 1066 and he died at Hastings. Their children fled to Dublin, the crown overthrown by Normandy, who (became) -> (the Houses of) Blois -> Angevin -> Plantagenet -> Lancaster & York -> Tudor (who married into the) -> Stuart -> Hanover -> Saxe-Coburg Gotha -> Windsor.
Start with Normandy (branched into) -> Blois and Plantagenet:
"After that it was disputed between William's grandchildren, Matilda, whose husband Geoffrey was the founder of the House of Plantagenet, and Stephen of the House of Blois (or Blesevin dynasty)."
Angevin came after Blois and before Plantagenet - they changed their name after they lost their Baronies in Anjou and became Plantagenet
"The name Plantagenet is used by modern historians to identify four distinct royal houses: the Angevins, who were also counts of Anjou; the main body of the Plantagenets following the loss of Anjou; and the Plantagenets' two cadet branches, the houses of Lancaster and York."
Lancaster and York fight with the winner becoming the Tudors:
"The first Tudor monarch, Henry VII of England, descended through his mother from a legitimized branch of the English royal House of Lancaster. The Tudor family rose to power in the wake of the Wars of the Roses (1455–1487), which left the House of Lancaster, with which the Tudors were aligned, extinct in the male line."
Tudor -> Stuart:
"In 1503, James IV attempted to secure peace with England by marrying King Henry VII's daughter, Margaret Tudor. The birth of their son, later James V, brought the House of Stewart into the line of descent of the House of Tudor, and the English throne"
So until that marriage, Stuart is the first house in 500 years to be "unrelated" to the House of Normandy. Until that marriage. Some notes seem to indicate they may have been Breton also:
Note the name Stuart, likely comes from "Steward".
"The ancestral origins of the Stuart family are obscure—their probable ancestry is traced back to Alan FitzFlaad, a Breton who came over to Great Britain not long after the Norman conquest. Alan had been the hereditary steward of the Bishop of Dol in the Duchy of Brittany; Alan had a good relationship with Henry I of England who awarded him with lands in Shropshire. The FitzAlan family quickly established themselves as a prominent Anglo-Norman noble house, with some of its members serving as High Sheriff of Shropshire. It was the great-grandson of Alan named Walter FitzAlan who became the first hereditary High Steward of Scotland, while his brother William's family went on to become Earls of Arundel."
"The sixth High Steward of Scotland, Walter Stewart (1293–1326), married Marjorie, daughter of Robert the Bruce, and also played an important part in the Battle of Bannockburn gaining further favour."
Robert the Bruce who fought for Scottish independence and eventually won it (see the movie: Braveheart with Mel Gibson) is related to Edward I of House of Plantagenet through Malcolm II of Scotland (see here). Thus are the Stuarts of that bloodline in 1300, even before they married the Tudors in 1503. They probably just needed a quick fill up on their reputation.
Anne was the "last Stuart" but James I grand-daughter married a Hanover, so it's a Hanover-Stuart-Normandy-Bruce...etc etc, George I crowned in 1714.
Then: the eldest son of Queen Victoria (Hanover-Stuart-Normandy-etc) and Prince Albert of Saxe-Coburg & Gotha had a child; Edward.
Finally: George V; in 1917, changed the name of the royal house and family to House of Windsor. Why?
"It was founded by King George V by royal proclamation on 17 July 1917, when he changed the name of the British Royal Family from the German Saxe-Coburg and Gotha to the English Windsor, due to the anti-German sentiment in the British Empire during World War I."
So, again - if we are being honest... it's not JUST "The House of Windsor" - it's literally all of them.
AND if as above, Robert the Bruce is related every single one of these people through Malcolm II, then the Houses of Wessex and Godwin are the only non-Scotti-French monarchs. Malcolm II of Scots, ancestor of King William the Lion, Bruce and Edward I - as seen in the picture above.
Malcolm II is the direct descendant of King Alpin, 1st King of Scots and Picts... son of the 111th High King of Ireland Connaire Coem. You see where this is going?
It's one big family. The same bloodline: just adding other royalty to its resume over time; changing names to keep the peasants satisfied with varied and timely drama and rebellion.
Tl;DR: piece together wiki quotes and you find out they are all the same family. Since it's wikipedia, it's acceptable "evidence" for normies - use wisely.
there doesn't seem to be anything here