For Frybort there are 3 on Yasni with different names.
Among the most common last names on Yasni Frybort is on position 4524.
The family legend, the first came in the 17th Frybort Century as a soldier schwedisacher to Moravia and sat up there. To date, this name is most common in Moravia. Which would correspond to the place name or Frybo Fribo in Sweden and Denmark = a free settlement or court. However, it is my combination and observation, not a fact.
(Sent from: Ludek Frybort)