1909 in Taftville, Connecticut
Saunders Mac Lane of the University of Chicago is recognized as one of the most important mathematicians of the mid-twentieth century. He is often remembered for his publications in the 1960s that created, along with the work of Sammy Eilenberg, the new field of Category Theory.
To mention only his mathematics is a mistake when describing Mac Lane. He was an imposing, tenancious, outgoing leader. He was physically large, radiating confidence. His talks at AMS-MAA sessions were heavily attended. Moreover, he was a force to be reckoned with, especially when he opposed public policy.
John MacDonald in remembering his thesis advisor, mentor and lifetime friend.
. . . from Focus, August, 2005, p. 4 .