THIS GENALOGICAL RESEARCH BASED ON THE ONE HAND THE SIMILAR COAT OF ARMS OF BOTH FAMILIES - (DE) GRAEFF AND VON GRABEN - THE GENEALOGICAL AND OFFICAL CERTIFICATES OF THE AUSTRIAN EMPEROR, AND ON THE OTHER HAND - OP DEN GRAEFF - ON THE SCHEUTEN MANUSCRIPTS (16TH CENTURY) AND THEIR FAMILY TRADITION.
SOME OF THE INFORMATIONS ABOUT OP DEN GRAEFF ARE ONLY CLAIMED BY THEIR DECENDANTS AND ARE NOT PROOFEN
Note: Verifiable ancestors of (De) Graeff, but not op den Graeff, whose ancestry from the House of the Trench is claimed, but genealogically unproven
Originally from Carniola, an apparent branch of the House of Meinhardin, the family spread in neighboring countries. The earliest known members of the Graben family, Konrad and his brother Grimoald von Graben, lived around 1170.
During the middle ages family went on to rule some Carinthian, Lower Austrian, Tyrolian, East Tyrolian, Styrian, Gorizian and modern Italian districts as Burgraven (a sort of Viscount) and Herren (local Lords / Lord of the manor) from the early Middle Ages until the 16th-17th centuries. The last member was Felix Jakob von Graben who lives in Tyrol; the family died out in 1776 or 1780.
Fief of Graben (Rudolfswert/Novo mesto, Slovenia)
Burgraviate of Lienz (Tyrol, Austria)
The House of Gorizia, also known as Meinhardin, was a dynasty of sovereign princes and counts in the order of the Holy Roman Empire. They where located in the Alps at the south-eastern boarder of the ancient Empire, and ruled the counties of Tyrol and Gorizia, duchy of Carinthia, margraviates of Istria and Carniola among other territories. The family died out with count Leonhard von Görz in 1500.