Bibran-Modlau (Bibran, Bibra und Modlau, Bibra-Modlau) was a Silesian noble family which was raised to Reichsfreiherr (Imperial barons) 1624. One source (Origines familiae Bibranorum in Francia orientali utraque Silesia et Lusatia ...) reports that the family descends from a Sigmund von Bibra (Franconian Bibra family) who traveled to Silesia in the 11th century, however the different coat of arms casts doubt on the connection. The description with the published (c. 1860) print of Schloss Modlau describes the Bibran family as having split off from the Franconia Bibras five hundred years ago. The family appears for the first time with Sigmund von Bibra, who apparently followed Agnes von Babenberg, granddaughter of Emperor Henry IV and bride Duke Władysław II had come to Silesia from Franconia. The family was divided into the Modlau line in the Bunzlau district , Profen in the Jauer district and Kittlitz-Treben-Woitsdorf in the Bunzlau district and Goldberg-Haynau. By 1480 Modlau and Profen were already in possession of the family. At the end of the family, it was centered at Reisicht and Modlau, in present-day Poland. Prominent members of the family were: Friedrich Heinrich von Bibran-Modlau, Abraham von Bibran Kittlitztreben und Woitsdorf, and Sigismund Heinrich von Bibran-Modlau († 1693) who was one of the largest land owner in Silesia. Modlau Line Nikolaus von Bibran zu Modlau († after 1510); ⚭ NN von Krommenau George von Bibran zu Modlau, Wolfshayn, Kosel, Thomaswalde; ⚭ NN von Hock und Thomaswalde Nikolaus von Bibran auf Modlau, Elder of the Principality of Jauer (1573–1600); ⚭ Eva von Schkopp Heinrich Freiherr von Bibran, Lord of Modlau, imperial. councilor, chamberlain and provincial governor (1597–1642); ⚭ Helena von Stosch zu Klein-Kotzen und Kreidelwitz Eva Eleonora von Bibran; 1.⚭ Sigsmund Freiherr von Klein-Lignitz († 1664); 2.⚭ Johann Heinrich Freiherr von Malzhan Nikolaus Alexander Freiherr von Bibran und Modlau, (1626–1680); 1.⚭ Maria Elisabeth von Kühnheim auf Nippern und Guckerwitz; 2.⚭ Anna Hedwig von Tschammer auf Dase; 3.⚭ Ursula Helena von Pitzelwitz auf Machwitz Heinrich Alexander Freiherr von Bibran (1656–1695); ⚭ Susanna Elisabeth Freiin von Schleepusch auf Groß-Polwitz und Heidenberg Friedrich Heinrich Freiherr von Bibran und Modlau; 1.⚭ Johanna Margaretha von Sack auf Lubichen († 1710); 2.⚭ Maria Elisabeth Freiin von Schweinitz auf Seifersdorf († 1721); 3.⚭ Charlotta Helena Freiin von Beeß und Cölln Friedrich Wilhelm Freiherr von Bibran (1674–1705); ⚭ Ursula Catharina Freiin von Stosch auf Gräditz Johann Georg Freiherr von Bibran auf Reisicht (1628–1682) Friedrich Freiherr von