Nielsen Hayden genealogy
Descendants of Maddalena Visconti
1361 - 1404 (43 years)Father: Bernabó Visconti (1319 Milan, Lombardy, Italy - 19 Dec 1385 Castle of Trezzo d'Adda, Lombardy, Italy)
Mother: Beatrice della Scala (Abt 1331 Verona, Veneto, Italy - 18 Jun 1384 Milan, Lombardy, Italy)
Maddalena Visconti (1361 - 17 Jul 1404 Burghausen, Bavaria)
Frederick of Bavaria (Abt 1339 - 4 Dec 1393 Budweis, Bohemia)(m. 2 Sep 1381 Landshut, Bavaria, Germany)
   └─ Elisabeth of Bavaria (1383 Trausnitz Castle, Lanshut, Bavaria, Germany -
    13 Nov 1442 Ansbach Castle, Bavaria, Germany)
    13 Nov 1442 Ansbach Castle, Bavaria, Germany)
    Friedrich I of Brandenburg (Between 6 Aug 1371 and 21 Nov 1371 -
    20 Sep 1440 Kadolzburg Castle, Bavaria, Germany)(m. 18 Sep 1401 Schongau am Lech, Bavaria, Germany)
    20 Sep 1440 Kadolzburg Castle, Bavaria, Germany)(m. 18 Sep 1401 Schongau am Lech, Bavaria, Germany)
       └─ Johann "the Alchemist" of Brandenburg (Bef 29 Sep 1403 - 16 Nov 1464 Baiersdorf, Bavaria, Germany)
        Barbara of Saxony (Abt 1406 - 10 Oct 1465 Bayreuth, Bavaria, Germany)(m. 26 May 1412)
           └─ Dorothea of Brandenburg (1430 - 10 Nov 1495 Kalundborg, Denmark) =>
            + Christian I, King of Denmark, Norway, and Sweden (Feb 1426 - 21 Mar 1481 Copenhagen, Denmark)
            (m. 28 Oct 1449 Copenhagen, Denmark)
            (m. 28 Oct 1449 Copenhagen, Denmark)