When Franconia fragmented in the early 13th century , Nassau emerged as an independent state as part of the Holy Roman Empire .
In the 1170s , the Count of Nassau , Walram I , received the area around Wiesbaden as a fiefdom .
When Franconia fragmented in the early 13th century , Count of Nassau emerged as an independent state as part of the Holy Roman Empire .
In the 1170s , the Count of Nassau , Walram I , received the area around Wiesbaden as a fiefdom .