University of St. Andrews (UK)
University of St. Andrews: Christoff Rudolff
This site from the University of St. Andrews provides biographical information about mathematician Christoff Rudolff, author of the first book about algebra in German.
Rice University
Galileo Project: Christoff Rudolff
This site from The Galileo Project of Rice University provides ten fields of biographical data which are compiled for you. The fields of data collected include, but are not limited to, dates (birth/death), father (occupation/wealth),...