Joan Seubert

She was born March 24, 1929, in Marathon, daughter of the late Richard and Marie (Sauter) Gassner. On July 23, 1949, she married John P. Seubert at St. Mary Catholic Church in Marathon. He preceded her in death on February 8, 2002.

Joan was a lifetime member of St. Mary Catholic Church and was very proud of belonging to the church renovation committee in 1993. She was very active with the PCCW at St. Mary’s and in 1963, she was chairman for the PCCW recipe book and created all the artwork throughout the cookbook. Among her favorite pastimes, she enjoyed bowling, golfing, reading, sewing and playing Bridge. Joan’s true passion was her artwork and throughout her life, painted hundreds of oil paintings, along with many other types of artwork.

She will be dearly missed by all who knew and loved her. Survivors include three children: Claire (John) Blume, Marathon, Jerome (Deb) Seubert, Athens and Eric (Cathrin Beilby) Seubert, Green Bay; daughter-in-law, Darlene Seubert, Rhinelander; her grandchildren: Tammy (Paul) Radtke, Denise (Dave) Pickering, Gwen (Josh) Gregory, Maria (Josh) Hertel, Josh (Alyssa) Seubert, Seth Seubert, Lindsey (Zach Glenn) Seubert, Chad (Margaret Retzlaff-Lasee) Seubert and Dane (April) Seubert; 14 great-grandchildren; her brother, Frank Gassner; sisters-in-law: Charlotte Seubert, Marathon, Sister Johanna Seubert FSPA, Willard and Rita Gassner, Wausau; brother-in-law, Father August Seubert OFM Cap., Appleton; and many nieces and nephews.

She was preceded in death by her son, Anthony Seubert on Saturday, Jan. 17, 2026; her parents, husband, John; son, Michael; brother, James Gassner; sisters-in-law: Betty Seubert and Myrna Gassner; and brothersin-law: Alexius Seubert and Joseph Seubert. The funeral Mass was celebrated at 11 a.m. on Saturday, Jan. 24, 2026, at St. Mary Catholic Church, Marathon. Rev. Msgr. Joseph Diermeier presided. Burial was at the parish cemetery. Visitation was held on Saturday from 9 a.m. until the time of service at the church.

Peterson/Kraemer Funeral Home, Marathon, is in charge of arrangements. Online condolences may be expressed at www. petersonkraemer.com.