William was born September 13, 1978, in Warrensburg, Missouri, the son of Donald Hillsman and Teresa (Stanley) Hillsman. He graduated from Warrensburg High School and attended UCM for four years, graduating with a Bachelor's Degree in Criminal Justice. Shortly thereafter he was employed with the Juvenile Detention Center and Integrity Correctional Facility in Warrensburg. William was united in marriage to Vanna Swihart on June 12, 2010 in Warrensburg, Missouri. He was employed with Country Kitchen for seven years before starting his employment as property manager with Glenwood Rentals. William was an Eagle Scout, A past member of the Troop 513 Leadership Council, and had a black belt in Taekwondo. He was very passionate about fitness, outdoors, and a devoted husband and father.

Survivors include his wife: Vanna Hillsman; parents: Donald and Teresa Hillsman; Children: Ethan W.J. Hillsman (Baylee Martin); Joshuah Parten; Gavin Hillsman; Ryeley Hillsman; Ethan Blake Parten; Kiersten Hillsman; grandchild: Oliver Martin; brothers: Don A. Hillsman, Jr.; Anthony Hillsman; nephews: Sgt. Chance Hillsman (Casie); Seth Hillsman; and grandniece: Ivory Hillsman. William was preceded in death by his maternal grandparents: Glen and Doris Stanley; and paternal grandparents: Ruby Hillsman and James Hillsman.

Memorial Services are scheduled for 10:00 a.m. March 25, 2022 at Bethlehem Lutheran Church of Warrensburg with Pastor Joel Kurz officiating. Interment will follow at Sunset Hill Cemetery in Warrensburg, Missouri. The family will receive friends from 5:00 p.m. to 7:00 p.m. Thursday, March 24, 2022 at Williams Funeral Chapel in Warrensburg, Missouri.

Memorial Contributions are suggested to the Philmont Scout Reservation in care of the funeral home.

Arrangements entrusted to Williams Funeral Chapel in Warrensburg.

Online condolences may be left at www.williamsfuneralchapel.net