Martha Wyatt McMahan, 96, of Chattanooga, passed away Friday, Dec. 21, 2012. Mrs. McMahan was the daughter of the late Mr. and Mrs. Eugene Wyatt and was born and reared in Chickamauga, GA. She was a graduate of Gordon Lee High School where she was very active in school clubs and sports. She graduated from the University of Chattanooga in 1938, member of Chi Omega and was an elementary school teacher in Georgia and Tennessee. She was a long time member of the Chickamauga Presbyterian Church before moving to Chattanooga and going to the First Presbyterian Church. At one time, she was a volunteer for Changed Lives.She was also preceded in death by her husband, William McMahan, Jr.; son, Eugene Wyatt McMahan; sister, Dorothy Hardeman (Ralph) of Columbia, S.C.; brothers, Henderson Wyatt (Sara), of Dalton, Ga., and Knox Wyatt (Carol) of Amelia Island, Fla.Survivors include her son, William "Bill" Allison III and wife, Debbie; grandchildren, Knox and Allison; great-grandson, Nicholas Wyatt LaPorta.Graveside services will be 10 a.m. Monday, Dec. 24, in Chattanooga National Cemetery. Memorial contributions may be made to Chickamauga Presbyterian Church, 1st Presbyterian Church or Hospice of Chattanooga.Visit www.lanefh.com to share condolences. Arrangements by Lane Funeral Home, Ashland Terrace, 877-3524.