Editing Rollo (section)

==Descendants==
[[File:Chronological tree of William I.svg|thumb|right|A genealogical chart of the [[Normans|Norman]] dynasty]]

Rollo's son and heir, [[William Longsword, Count of Rouen|William Longsword]], and grandchild, [[Richard I of Normandy|Richard the Fearless]], forged the [[Duchy of Normandy]] into [[West Francia]]'s most cohesive and formidable principality.<ref>{{Cite book |last=Searle |first=Eleanor |title=Predatory Kinship and the Creation of Norman Power, 840–1066 |date=1988 |publisher=University of California Press |isbn=978-0-520-06276-4 |location=Berkeley |page=89}}</ref> The descendants of Rollo and his men assimilated with the Frankish culture and became known as the [[Normans]], lending their name to the region of [[Normandy]].<ref>{{Cite book |last=Brown |first=R. Allen |title=The Normans |date=1984 |publisher=Boydell & Brewer |isbn=0312577761 |page=16}}</ref>

Rollo was the great-great-great-grandfather of [[William the Conqueror]], the progenitor of [[House of Normandy]] in England; however, [[Charles III]] and the [[British Royal Family]] are not direct male-line descendants of Rollo, as the House of Normandy ended with the death of [[Henry I of England|Henry I]]. However, the [[House of Plantagenet]] was influenced by the Norman dynasty, as [[Empress Matilda]], the mother of [[Henry II of England]] was the daughter of the Norman king [[Henry I of England|Henry I]].

A [[Y chromosome|genetic]] investigation into the remains of Rollo's grandson Richard the Fearless, and his great-grandson [[Richard II, Duke of Normandy|Richard the Good]], was announced in 2011 to discern the origins of the historic Viking leader.<ref>{{Cite web |date=15 June 2011 |title=Viking is 'forefather to British Royals' |url=http://www.newsinenglish.no/2011/06/15/viking-is-forefather-to-british-royals/ |url-status=live |archive-url=https://web.archive.org/web/20110618050636/http://www.newsinenglish.no/2011/06/15/viking-is-forefather-to-british-royals/ |archive-date=18 June 2011 |access-date=15 June 2011 |website=Views and News from Norway}}</ref> On 29 February 2016, Norwegian researchers opened Richard the Good's tomb and found a lower jaw with eight teeth in it.<ref>{{Cite web |date=2 March 2016 |title=Was Viking Ruler Rollo Danish or Norwegian? |url=https://www.thelocal.no/20160302/was-viking-ruler-rollo-danish-or-norwegian |url-status=live |archive-url=https://web.archive.org/web/20161009130906/https://www.thelocal.no/20160302/was-viking-ruler-rollo-danish-or-norwegian |archive-date=9 October 2016 |access-date=6 October 2016 |website=[[The Local]]}}</ref> However, the skeletal remains in both graves turned out to significantly predate Rollo and therefore are not related to him.<ref>{{Cite web |date=23 November 2016 |title=Skeletal shock for Norwegian researchers at Viking hunting |url=http://norwaytoday.info/culture/skeletal-shock-norwegian-researchers-viking-hunting |url-status=dead |archive-url=https://web.archive.org/web/20211206051115/https://norwaytoday.info/culture/skeletal-shock-norwegian-researchers-viking-hunting/ |archive-date=6 December 2021 |access-date=28 March 2017 |website=Norway Today}}</ref>
{{House of Normandy family tree}}