Mary married in February 1506[1][2][3] to Count Jobst I of Holstein-Schauenburg-Pinneberg (1483[1][2] – 5 June 1531[1][2][note 2]). It was a double wedding, on the same day Mary's elder sister Elisabeth married to Count John III of Wied [de].[1][2][3][7] The double wedding of Elisabeth and Mary was held at Siegen Castle [de]. A banquet was also held in the city hall in Siegen at which both brides and grooms were present. The feast with the city magistrates was paid for by the brides' father and the city council donated 16 oxen and 19 pigs for the feast.[7] On 16 February 1506, the ʻBeilagerʼ of the two sisters was celebrated in Dillenburg with the greatest of festivities. The purchase of gold fabric for 747 guilders and silk fabric for 396 guilders at the trade fair in Mainz for these celebrations and the wedding of their brother William in Koblenz in May 1506, as well as the unusually high total expenditure of 13,505 guilders in the accounts of 1505/1506, show that these weddings must have been splendid events.[8]
^In many sources she is called Mary of Nassau-Dillenburg. The County of Nassau-Siegen is erroneously called Nassau-Dillenburg in many sources. The county was not named after the small, unimportant city of Dillenburg, which did not even have a church until 1491, but after the, for that time, large city of Siegen, the economic centre of the county and the counts' main residence. See Lück (1981), passim. It is also evident from the numbering of the reigning counts with the given name John. One John without regal number who ruled the County of Nassau-Dillenburg in the period 1303–1328, and eight counts by the name of John who ruled the County of Nassau-Siegen in the period 1362–1638.
^The date of death 5 June 1532 in Vorsterman van Oyen (1882), p. 97.
^The date of death 1543 in Vorsterman van Oyen (1882), p. 97.
^"Kwartierstaat Willem van Oranje". In: B.C. de Savornin Lohman, et al. (red.) (1933), Prins Willem van Oranje 1533-1933 (in Dutch). Haarlem: H.D. Tjeenk Willink & Zoon N.V. between pp. 16–17.
Aßmann, Helmut & Menk, Friedhelm (1996). Auf den Spuren von Nassau und Oranien in Siegen (in German). Siegen: Gesellschaft für Stadtmarketing Siegen e.V.
Becker, E. (1983) [1950]. Schloss und Stadt Dillenburg. Ein Gang durch ihre Geschichte in Mittelalter und Neuzeit. Zur Gedenkfeier aus Anlaß der Verleihung der Stadtrechte am 20. September 1344 herausgegeben (in German) (Neuauflage ed.). Dillenburg: Der Magistrat der Stadt Dillenburg.
Dek, A.W.E. (1970). Genealogie van het Vorstenhuis Nassau (in Dutch). Zaltbommel: Europese Bibliotheek.
Ehrenkrook, Hans Friedrich von; Förster, Karl & Marchtaler, Kurt Erhard (1928). Ahnenreihen aus allen deutschen Gauen. Beilage zum Archiv für Sippenforschung und allen verwandten Gebieten (in German). Görlitz: Verlag für Sippenforschung und Wappenkunde C.A. Starke.
Huberty, Michel; Giraud, Alain & Magdelaine, F. & B. (1976). l'Allemagne Dynastique (in French). Vol. Tome I: Hesse-Reuss-Saxe. Le Perreux: Alain Giraud.
Huberty, Michel; Giraud, Alain & Magdelaine, F. & B. (1981). l'Allemagne Dynastique (in French). Vol. Tome III: Brunswick-Nassau-Schwarzbourg. Le Perreux: Alain Giraud.
Knetsch, Carl (1917). Das Haus Brabant. Genealogie der Herzoge von Brabant und der Landgrafen von Hessen (in German). Vol. I. Teil: Vom 9. Jahrhundert bis zu Philipp dem Grossmütigen. Darmstadt: Historischer Verein für das Großherzogtum Hessen.
Lück, Alfred (1981) [1967]. Siegerland und Nederland (in German) (2nd ed.). Siegen: Siegerländer Heimatverein e.V.
Schutte, O. (1979). "Genealogische gegevens". In Tamse, C.A. (ed.). Nassau en Oranje in de Nederlandse geschiedenis (in Dutch). Alphen aan den Rijn: A.W. Sijthoff. pp. 40–44. ISBN90-218-2447-7.
Textor von Haiger, Johann (1617). Nassauische Chronik (in German). Herborn: Christoph Raab.
Vorsterman van Oyen, A.A. (1882). Het vorstenhuis Oranje-Nassau. Van de vroegste tijden tot heden (in Dutch). Leiden: A.W. Sijthoff/Utrecht: J.L. Beijers.