His wife, Agnes, a railroad telegraph operator from Butte, died in 1957. The couple had no children.
Breuning inherited the distinction of being the world's oldest man in July 2009 when Briton Henry Allingham died at age 113. Allingham had joked that the secret to long life was "Cigarettes, whisky and wild, wild women - and a good sense of humor," according to Guinness World Records.
Breuning was to give a speech at an invitation-only birthday party at the Rainbow Retirement Community in downtown Great Falls, where he lives, with a guest list that includes Montana Gov. Brian Schweitzer and representatives from Guinness World Records.
Breuning has celebrity status at the retirement home, with visitors waiting in line to see him, Ray Milversted, 92, told The Great Falls Tribune.
Tina Bundtrock, executive director of the Rainbow, said the home has adopted a policy of scheduling visits with Breuning by appointment, so he's not taxed by people dropping in to see him.
Gavin Seeberger recalled how his father, former Great Falls banker John Seeberger, tried to persuade Breuning in the mid-1990s to purchase a two-year certificate of deposit instead of a five-year CD. Breuning had come into the bank to take advantage of a special rate on five-year CDs, and he insisted that he would be there to collect it in person at age 105 when it matured.
And he did, Gavin Seeberger told the Great Falls newspaper.
"That is being sure of one's self," he said.