Nicolaus Pol
Nicolaus Pol (c. 1467 – 1532) was a Renaissance-era physician. He entered the service of Sigismund of Austria at Innsbruck in 1487, and continued to serve Sigismund's successors, emperors Maximilian and Charles until his death in 1532, at an age of about 65 years. He received a medical degree in 1494, and marked the inside cover of all the books in his library with "Nicolaus Pol, doctor, 1494". Pol collected a substantial library, estimated at some 1350 volumes, an enormous number at the time. The subject matters included all topics of interest to the "Renaissance man", including  medicine, natural sciences, alchemy, astrology and divination, etc. After Pol's death in 1532, his library passed to Innichen Abbey in South Tyrol. Surviving volumes of his library are now scattered, some are found in libraries in Innichen, Innsbruck, and Vienna, and in the USA in the National Library of Medicine, in Yale and in the Dittrick Museum of Medical History (33 volumes bought in 1929 from Maggs Brothers, for GBP 2,500).