Remembering Donald Slattery and Diane Postler-Slattery

Obituary issued by MyMichigan Health 3/14/22

Donald Slattery (65) and Diane Postler-Slattery (62) tragically passed away in a private plane crash on March 8th, 2022, in Panama City Beach, FL. They would have celebrated 31 years of marriage on March 16th, 2022. They were married at New Hope Community Church in Wausau, WI in 1991. Throughout their time here on Earth, Don and Diane embraced every opportunity that came their way to the fullest. They lived faithfully, loved unconditionally, worked passionately, and gave generously.
Don was born in Wisconsin Rapids, Wisconsin on January 12, 1957 to William and
Eleanor (Ponczoch) Slattery. He started his career at Aspirus Wausau Hospital in 1982, where he was a Biomedical Electronics Technician. Don started his own business called Tower Technical Services, LLP. He later earned an MBA from the University of Wisconsin, Oshkosh in December of 2002. He eventually found his way back to Aspirus Wausau Hospital where he retired as a Project Manager in 2012. Don was able to enjoy his retirement years supporting Diane and being dedicated to his family and friends.

Don had an undeniable passion for aviation. He loved working with his hands and
tinkering on projects. He was both creative and methodical, and could make or fix
anything. Don loved people and having fun. He would drop anything and everything at a moment’s notice to help anyone. His steadiness, strength, and reason were matched by his warmth, love, and deep devotion to Diane, his children, and his grandchildren. He was an amazing husband, father, “papa,” son, and brother.
Diane Postler-Slattery was born in Thorp, Wisconsin on March 30th, 1959 to Melvin and Julie (Dittbrender) Postler. She started her career at Aspirus Wausau Hospital as a nurse. She earned a MS in Nursing Administration from the University of Wisconsin, Eau Claire. She then earned her Ph.D. in Education Administration from the University of Wisconsin, Madison in 1995. Through her hard work and dedication, she became President and COO of Aspirus Wausau Hospital. In 2013, Diane was offered the opportunity to become President and CEO of MyMichigan Health in Midland, Michigan. Diane was passionate about healthcare and truly loved her career.
While many people knew Diane as an impressive leader of the community, she was an even more impressive wife, mother, sister, daughter, and grandmother. She was passionate about everything she did. She had the ability to make everyone feel at home with her infectious smile and big hugs. Diane loved the outdoors and often referred to riding horses as her “happy place.” Wherever she went, she left a trail of half-drank Diet Dr. Pepper cans. She was the care-taker, the comforter, and the counselor for those she loved.
Don and Diane were very active members of each community they resided in. They were involved in numerous organizations, boards, and charities. Though dedicated to service, they were never more happy than when enjoying time and sharing laughs with their family and friends. Their lives were grounded in the faith they had in the Lord which was evident in the way they lived and how they gave of their time and energy.
Don and Diane are survived by their children and grandchildren: Michael (Liz) Fredericks (children; Luke and Violet) of Duluth, MN; Michelle (Scott) Grutzik (children; Henry, Calvin, and Theodore) of Wausau, WI, Melissa (Austin) Swihart of Boones Mill, VA.
Don’s surviving siblings include Judy Slattery (Sister-in-Law; Glenwood Springs, CO),
Lois (Wally) Leece (Wisconsin Rapids, WI), Kathy TerMaat (Vesper, WI), Charlotte
Richardson (Wisconsin Rapids, WI), Janet (Larry) Lassa (Wisconsin Rapids, WI), John(Kris) Slattery (Wisconsin Rapids, WI), Michael (Deb) Slattery (Plover, WI), Mary Beth (Craig) Kruse (Green Bay, WI), Marcia Slattery (Madison, WI), and Lori Slattery
(Wisconsin Rapids, WI) and many nieces and nephews.
He was preceded in death by William and Eleanor Slattery (parents), William Slattery Jr. (brother), infant siblings Kenneth (brother) and Jean (sister), Dale TerMaat
(brother-in-law), Dennis Leece (nephew) and Jeff TerMaat (nephew).
Diane’s surviving family are her parents Melvin and Julie (Dittbrender) Postler (Ringle,
WI), sister Dixie Hettinga (Weston, WI), brother Dennis (Jennifer) Postler (Bonsall, CA), sister Desirae Koning (Sussex, WI), and many nieces and nephews.
She was preceded in death by Cliff Hettinga (Brother-in-Law) and Olive Jean (infant
In lieu of flowers or gifts, any donations will be used to set up scholarships and given to various charitable organizations that Don and Diane felt passionate about.
A celebration of their lives will be held on Saturday, March 19th, 2022.

New Hope Community Church
229375 County Rd J
Wausau, WI, 54403
(715) 845-8541

There will be two visitation times:
9 a.m. to noon
1:30 p.m. to 3:30 p.m.
Service at 4 p.m.

Coordinated by:
Brainard Funeral Home
5712 Memorial Ct.
Weston, WI, 54476
(715) 845-5525