John I, King of Jerusalem & Emperor of Constantinople - Family of John of Brienne, King of Jerusalem

Grandson John I, King of Jerusalem & Emperor of Constantinople John of Brienne, King of Jerusalem, is in a recent film.

https://www.sultanandthesaintfilm.com/?s=john

sultan and the saint biography john of brienne

John of Brienne was born in about 1170 CE. He was the youngest son of a minor noble, Count Erard II of Brienne. As a youngest son, he would have been left without inheritance of property, on account of primogeniture, meaning that only the eldest son inherits property from his father. Like many … [Read more...]

https://en.wikipedia.org/wiki/John_of_Brienne

Cross posting:

https://www.geni.com/discussions/286298?msg=1736051 from Livio Scremin

about John I, King of Jerusalem & Emperor of Constantinople
on 2019 Italian historians attribute "probably" to him a daughter: Agnese (di Brienne) Tiepolo
the first wife of the future Venetian Doge: Lorenzo Tiepolo, 46th doge of Venice

I think they use "probably" because for it they cite just only:
"Loenertz, 1975, pp. 44 s."

and then they use "or" of a Balkan prince, I say perhaps to take into consideration the old Doge studies published in 1937

_______________
Aveva contratto un primo matrimonio con Agnese, probabilmente figlia di Giovanni di Brienne re di Gerusalemme (1210-25; Loenertz, 1975, pp. 44 s.) e poi imperatore di Costantinopoli (1231-37),
oppure di un principe balcanico.

• http://www.treccani.it/enciclopedia/lorenzo-tiepolo_(Dizionario-Bio...
• Profile: Lorenzo Tiepolo, 46th doge of Venice
• His Medlands known only the 2nd wife from when he was already Doge.

The reference for Agnes as daughter of John of Brienne is:

He [Lorenzo Tiepolo] had contracted a first marriage with Agnes, probably the daughter of John of Brienne king of Jerusalem (1210-25; Loenertz, 1975, pp. 44 s.) and then Emperor of Constantinople (1231-37), or of a Balkan prince.

https://www.treccani.it/enciclopedia/lorenzo-tiepolo_%28Dizionario-..., (2019) citing
R.-J. Loenertz, Les Ghisi, dynastes vénitiens dans l’archipel, 1207-1390, Florence 1975, pp. 44 s

The cited source is not available on line to me, although it's held at a nearby library.

I found a more complete discussion, which builds on the same Loenertz mention Treccani cites. It's an interesting article.

https://fmg.ac/publications/journal/vol-1/category/41-fnd-1-3
Bohemund of Brienne, Prince of Rascia, Alleged Ancestor of Bajamonte Tiepolo
This article attempts to shed some light on the ancestry of Bajamonte Tiepolo, failed leader of a putsch against the Venetian Republic in 1310.

Looks like someone postulated the second wife of Lorenzo Tiepolo as sister of Bohemond of Brienne, King of Rascia (brother of John, Emperor of the East).

"I suggest that Bohemond was not a ruler of Raöka, but an otherwise unknown castellan of Rachir in Istria. There is some dispute as to where Rachir was situated. It seems likely however that it is identical to the castle of Racize, close to Dragush in the district of Pinguente 17 . The geopolitical argument is compelling. It was from this region that Bajamonte meddled in Venetian politics, to the fury of the ruling establishment 18 .... "

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Tagging:

Lorenzo Tiepolo, 46th doge of Venice

His wives: Agnese Tiepolo & dogaressa Marchesina Tiepolo

Sons: Jacopo Tiepolo, lo Scopulo & Piero Tiepolo, conte di Ragusa

Grandson: Bajamonte Tiepolo, il Gran Cavaliere

The "ancestry of Bajamonte Tipelo" article has been uploaded to profiles, and can be viewed here:

https://www.geni.com/documents/view?doc_id=6000000212563587827

Roberts, Gary Boyd. The Royal Descents of 600 Immigrants. Baltimore, MD, USA: Genealogical Publishing Co., (2004). Section: Immigrant Descendants of High Medieval Kings. Page 385. "Descent from [[Alfonso IX, king of Leon and Galicia Alfonso IX, king of Leon and Galicia] Alphonso IX], King of Leon, d. 1230 = [[Berenguela I la Grande, reina de Castilla Berenguela I la Grande, reina de Castilla] Berengaria of Castile]." Hannah Hall daughter of Sarah Henchman & Capt. Daniel Henchman married Lieut. William Sumner, III and was an ancestor (via American heiress Jeanette Porch his mother) of British Prime Minister Winston Churchill

Document uploaded to profies here:

https://www.geni.com/documents/view?doc_id=6000000212566386836

(but it will take me a while to tag them all)

Back to Tiepolo's wife Agnese:

From https://www.geni.com/documents/view?doc_id=6000000212566386836

'Bohemond de Brienne' of Rascia cannot reliably be connected to the family of Jean de Brienne, King of Jerusalem and Latin Emperor of Constantinople. The latter was, I believe, too celebrated to have mysterious relations, adventurers in the thirteenth-century Balkans, otherwise unknown. The Tiepolos and their cognates, especially the Ziani16, had, on the other hand, contemporaneously been associated with Venetiann attempts to dominate the Dalmatian littoral. The immediate family of Jean de Brienne is set out in Fig 2 below.

Page 204-205:

Who was Bajamonte's maternal grandmother? Ragg (1928, p.66) says that she was called Marchesina, daughter of Bohemond of Brienne, king of Serbia. This unusual name leads us into some intriguing territory.

Loenertz (1975, pp. 43-45) has established beyond doubt that Marchesina was the daughter of Geremia Ghisi, lord of Andros (in the Cyclades), living 1207-1243. Doge Lorenzo Tiepolo was also lord of Skiathos and Skopelos (in the
Sporades). A matrimonial alliance between two Aegean island dynasts, threatened by a newly resurgent Byzantium under the Palaiologi, makes sense. Lorenzo and Marchesina married sometime before 1262.

Loenertz goes on to state, on charter evidence, that Lorenzo Tiepolo's first wife was Agnesa, daughter of Bohemond de Brienne31. His sons, Pietro and Giacomo, he proposes, were born by his second wife, Marchesina Ghisi.

Bajamonte's descent from a scion of the Brienne family looks increasingly elusive, even improbable.