What do the German abbreviations "urk." and "u." mean in a genealogical publication?
For example, I know from other portions of the text I am working from that this person died about 1306 and was a knight (Ritter), but how should the rest of this description be interpreted in German:
Conrad Flyner v. Altenburg
Ritter, 1290, 1297 u. 1306
urk. in Esslingen