Doris Kathryn Holubar March 16, 2018 Obituaries Tweet Share LinkedIn Email 93-year old Doris Kathryn Holubar of Marshalltown, passed away on March 11th. Memorial services for Doris Holubar will be held on Friday, March 23, 2018 at 11:00 a.m. at the Mitchell Family Funeral Home in Marshalltown.