Maximilian von Ostfriesland, comte de Durbuy et d’Oostfrise

Genealogie von französischen Familien im Mittelalter http://racineshistoire.free.fr

Recueil de généalogies, fragments, notes et épitaphes des provinces du Nord (Sars de Salmon)
Publication: Archiv Municipale de Valenciennes, 1862
Text: tome VIII, p. 431 "Maximilien, Comte d'Oostfrise, chevalier de la toisin d'or, epousa barbe de Lalaing ... fille de philippe de Lalaing, comte d'Hoostrate, baron de Borsele, chv. de la toison d'or et d'anne de Rennenberg"

Recueil de généalogies, fragments, notes et épitaphes des provinces du Nord (Sars de Salmon)
Note: Manuscrits 809 à 821 (14 volumes : 435, 337, 317, 353, 348, 396, 386, 399, 344, 375, 355, 377, 163 feuillets, 180 pages). XIXe siècle. Papier. 245 sur 218 mm. Blasons coloriés. Portrait de l'auteur par Léonard, lithographié par Henry. Rel. basane (Don de l'auteur).

Curator note: The genealogies of Casimir de Sars
The "Recueil de généalogies, fraguements, notes et épitaphes des Provinces du Nord recueillies d'anciens manuscrits, renseignements particuliers et autres ouvrages, rédigées par ordre alphabétique" (Collection of genealogies, fraguements, notes and epitaphs of the Northern Provinces collected from old manuscripts, particular information and other works, written in alphabetical order) follows a new method, presented by the author at the beginning of each of the thirteen volumes: to facilitate the reading, a cut line separates each generation and numbers link ascendants and children. Each volume has its own table. The collection itself was endowed with a general table, realized by Wattecamps, sub-librarian, and forming since 1877 a fourteenth volume.

Casimir de Sars de Solmon (1766-1859) devoted many years to compiling genealogical information. A former infantry officer, he was appointed librarian in Valenciennes in 1800 and remained so until 1830. He recognizes that his "work is full of mistakes" because he has "not seen any authentic titles".

Always much consulted by genealogists, the work of Casimir de Sars has been partially published by the Sources généalogiques et historiques des provinces du Nord and by the Association généalogique Flandre-Hainaut.

Titles: Heer von Heeswijk. Graf von Falkenburg & Herr von Durbuy und Dalem (letztere Titel durch Heirat)
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5. JOHANN “der ältere” (-6 Jun 1572). Graf zu Ostfriesland 1538. m (Brussels 11 Nov 1539) DOROTHEA von Oesterreich, illegitimate daughter of Emperor MAXIMILIAN I & his mistress ---. Heiress of Falkenburg, Durbuy and Dalem. Emmius records the marriage arranged in Brussels “ante Eidus Novemb.” 1539 between “comiti Ennoni...fratre Ioanne” and “Dorotheæ” whose dowry was “Durbuyum oppidum...in finibus Lucelburgi principatus...Falcoburgii et Dalæ præfectura in ulteriore ripa Mosæ”[238]. Beninga records the marriage in 1539 of “Graven Johan tho Oostfreeslant” and “Dorothea van Ostenryck, Keyser Maximilians natuerliche dochter”[239]. No reliable indication has been found about the identity of Dorothea’s mother. Johann & his wife had two children:
a) MAXIMILIAN (Emden 1542-1600). Comte de Durbuy. m (Mechelen 14 Nov 1564) BARBE de Lalaing, daughter of PHILIPPE de Lalaing Graaf van Hoogstraten, Baron d’Escornaix & his wife Anne de Rennebourg. Maximilian & his wife had three children:
i) DOROTHEA ([1567/68]-1604). m (before 11 Apr 1592) JAKOB t’Serclaes, son of --- (-Tilly 11 Oct 1624). Graaf van Tilly 1622.
ii) WERNER ALEXANDER (-1633). Seigneur de Durbuy. m as her second husband, JEANNE de Mérode-Houffalize Dame de Nalinnes, widow of ROBERT d’Argenteau Seigneur d’Ochain, daughter of JEAN de Mérode Baron de Morialmé & his wife --- (-before 1 Sep 1637).
iii) LUISE (Sep 1576-25 Oct 1607). The Marquis de Trazegnies records her family origin and marriage, the parentage of her husband, and her two daughters: Marie de Barbançon vicomtesse de Dave, wife of Albert de Ligne-Arenberg Prince de Barbançon, and Bonne de Barbançon dame-comtesse de Villemont, wife firstly of Philippe de Merode Marquis de Westerloo and secondly of Arnould de Merode Seigneur de Clermont[240]. m (before 5 May 1601) EVERARD de Barbançon Vicomte de Dave, Seigneur de Villemont, son of HENRI de Barbançon & his wife Bonne d’Ongnies (-31 Dec 1608, bur Soy).
Maximilian had one illegitimate child by an unknown mistress:
iv) MARIA . m (Heeswijck 8 Jul 1620) HENDRIK van den Bergh Heer van Bericum, illegitimate son of --- (-before 1633).
b) ANNA . m JOST van Bronckhorst, son of --- (-killed in battle near Wachtendonk 1589). Graaf van Gronsfeld en Limburg 1588.
6. ANNA (-Berum 1530, bur 1548 Emden Große Kirche).
7. ARMGARD (-Leerort 1559, bur Emden Große Kirche).

Cawley, Charles. “ OLDENBURG, OSTFRIESLAND.” Medieval Lands, Foundation for Medieval Genealogy, 24 Mar. 2022, https://fmg.ac/Projects/MedLands/OLDENBURG.htm#_Toc482091715