William A. ‘Bill’ Halvorson
June 26, 1928 — Sept. 5, 2016

William A. “Bill” Halvorson, 88, of Naples, Fla., died September 5, 2016. Born June 26, 1928 in Menomonie, he was the son of the late George and Katherine Dietsche Halvorson.

Bill became an accomplished pianist. When he met Patricia J. von Trebra, also an accomplished musician, she was attracted to him because he sang in tune! Bill enlisted the U.S. Army, playing saxophone and leading a zoot suit American jazz combo based in Okinawa, Japan, as a member of the Special Services. After a year and a half overseas, he attended UW-Stout, then transferred to the University of Michigan on a football scholarship. Injury ended football and he returned to UW-Madison. Bill graduated with a BBA from the UW in 1950 and an MBA in 1951.

He and Patricia married on December 27, 1951. They started out in Manhattan and moved to New Rochelle, N.Y., where their first son, Robert, was born in 1953. In 1956, Bill’s work took the family to California, where James, Janet and Audrey were born.

Bill and Patricia returned to Wisconsin, where Bill opened the Milwaukee office. Their fifth child, Katherine, was born in 1964. Bill served as president of the Society of Actuaries and the American Academy of Actuaries. He is widely recognized as one of the most important health actuaries of his time. Bill retired at 54. He and Patricia moved to Naples in 1982. For a short time, he relaxed in the sun and on the golf course. His desire to be productive led him to form his own company, Halvorson Research Associates. He went back to work full time. He continued to play golf, becoming a local champion with a 5handicap. At age 75, he was diagnosed with Parkinson’s disease. Gradually his golf game and mobility decreased. He remained alert and involved, always interested new ideas and of course, his family.

Bill will be dearly missed by all those whose lives he influenced.

He is survived by his wife, Patricia; son, Robert; daughters, Janet, Audrey and Katherine; six grandchildren; and two great-grandchildren.

He was preceded in death by his son, James, and his two brothers, Harry and Keith.

Donations in Bill’s memory may be made to the University of Wisconsin Foundation.

Funeral services held in Florida were private. Additional memorial services will be announced.

Fuller Funeral Home-East Naples, 239-417-5000, is serving the family. For more information and online condolences, visit