Dr. and Mrs. John M. Davis will celebrate their 50th wedding anniversary April 6. Mrs. Davis is the former Gerna Mae Hammerstein of Brazil. John and Gerna were married at First Christian Church by the late Rev. Earl Cummings. They have two children, Anne McCrary and Thomas Davis, both of whom reside in Atlanta. They have five grandchildren. The family will celebrate with a dinner party at the Petite Auberge Club in Atlanta. Invitations have been sent.