Olga H. Ringwall, 93, of Ironwood, died Friday, Feb. 24, 2012, in Ironwood.      She was born Oct. 4, 1918, in Ironwood, the youngest child of Ivar J. and Mary (Tuoppala) Heikkila. She attended McKinley and Roosevelt schools, and graduated from Ironwood High School in 1936. She continued on and graduated from Ironwood Junior College in 1938.      Olga was married on April 18, 1942 to Birger Ringwall. He preceded her in death on Aug. 6, 2001.      Olga was employed as a bookkeeper, first at Gogebic National Bank and then at Morrison Audit Company, which later became Ernst and Ernst. In later years she worked from home doing book work for private clients such as Gertz Furniture and Rovelsky and Company.      Olga was a caring mother and grandmother, especially known for her cardamom bread and home made raspberry jelly. She was also an avid crossword puzzle fan.      In addition to her parents and husband, Olga was preceded in death by three brothers, Arne, Nilo and Arvo; a sister, Saimi; and a son-in-law, Miles Holmes.      She is survived by a son, David (Angela), San Antonio; daughters, Donna Holmes, Bessemer, and Susan Ringwall (Jim Pieterick), Rochester, Minn.; grandchildren, Christopher Holmes, Clinton Township, Alison (Curtis) Fisher, Salem, Ore., Nicholas Ringwall, Charleston, SC, and Nathan Ringwall, Beaumont, Texas.;  great-grandchildren, Myles and Maisy Fisher; and one niece and two nephews.      Olga was a lifelong member of St. Paul Lutheran Church in Ironwood.      Out of respect for her wishes, cremation has taken place.      Memorial services will be held Saturday, March 17, at 11 a.m., preceded by visitation at 10 a.m., at St. Paul Lutheran Church, 111 So. Curry St., in Ironwood, with Pastor Peggy Rose officiating.      Committal will take place at the church, with luncheon to follow in the church fellowship hall.      Spring burial will be in Riverside Cemetery, Ironwood.      In lieu of flowers, memorial contributions may be made to St. Paul Lutheran Church.      Condolences can be given to Olga's family online at mckevittpatrickfuneralhome.com.      Arrangements are entrusted to McKevitt-Patrick Funeral Home and Cremation Services of Ironwood.