I was skeptical of Gibbons/Wikipedia claim about the Roman origin of the House of Este: someone should edit. Their source is "The miscellaneous Works of Edward Gibbon Vol 3 page 172."
https://en.wikipedia.org/wiki/House_of_Este
Just checked. It seems to be misplaced. Here's
p.172 of Vol. 3. Might be a different edition.
Gibbon does go through the a history of the House of Este later ("Antiquities of the House of Brunswick",
p.399 ff ). And he agrees with me. He also says that the hypothesis that Otbert is a grandson from the marriage of Wido & Marozia "will not endure the test of critical inquiry" (
p.417). Although he does embrace the hypothesis that that Otbert could have been derived from a junior branch from the Bonifaci House of Tuscany - that is, that Otbert's father was a cousin of Wido. I am not quite convinced of this, and Gibbon himself admits it is a speculative connection. Still, by linking the Obertenghi of Luni to the Bonifaci of Tuscany allows Gibbon to push the antecendent line back another century to its root in Boniface of Lucca, a Frankish governor installed in Carolingian times. (Gibbon calls him a "Bavarian", p.404, 406)
(Although Gibbon does not clarify "Bavarian", my own records indicate Boniface was likelier a
Frankish lord who governed in Bavaria (rather than native Bavari). He was in Bavaria until 812, when Charlemagne transferred him to Italy to organize an govern the "March of Tuscany" (centered at Lucca, and initially including Luni). I can track the descendants of the Bonifaci pretty closely, and there seems to be no Roman marriages; they married into Frankish families all the way through, until Wido of Tuscany had his brief marriage to Marozia of Rome in the 930s. The hypothesized junior line that goes through Otbert and then Este would have broken off a generation before this marriage. That is, if we accept Gibbon's speculative hypothesis that the Obertenghi were derivative of the Bonifaci at all - which is far from clear. Either case, Gibbon certainly does
not accept that the Este were descended from Marozia, and can't find any mention of any other Roman family, so Wiki is mistating it).
And the Wiki quote is completely weird. Says the "Attii migrated to Este to defend against the Goths". The Goths? What century is this? Este is in the Padua region (east). The Obertenghi were marquises in the Lunigiana (west) The "migration" did not happen, as the article itself acknowledges, until the mid-11th C., when the Obertenghi marquis Albert Azzo II built the castle in Este. Very weird.
This is not true.
Most if not all the church positions during and after the barbarian invasions were taken by old roman aristocrats. It took decades to get the first frankish bishops.
I'd say it's correct to say that part of the roman aristocracy recycled itself in a clerical role.
True, but it isn't quite part of the elite but an interface between the masses and the elite. (Catholic) bishops were leaders of the local Romano-X communities, and thus naturally drawn from old local Roman gentry. They served as the representatives and defenders of the interests the Romano-X pops to the German warlord elite. And, of course, didn't marry into it.