Peter Naur, a Danish computer scientist and 2005 recipient of the ACM A.M. Turing Award for fundamental contributions to programming language design and the definition of Algol 60, to compiler design, and to the art and practice of computer programming, died January 3, 2016.

http://cacm.acm.org/news/196208-in-memoriam-peter-naur-1928-2016/fulltext