Leonard was born 5 September 1933, to Cletus and Anne Mannas of Tulsa OK and died 17August 2014. Lived in Tulsa for all of his life. Met and married Martina Rommelfanger of almost 55 years. He retired from Shell Oil Company as a Computer Programmer and Systems Analyst after 29 years of service. He was a long time member of the Church of St. Mary and an active member of the Choir. Served as Boy Scouts of America Adult Leader and Scoutmaster for his sons. Survived by his wife, Martina (nee Rommelfanger) Mannas, his sons, Anthony Mannas of Tulsa OK, Ronald Mannas of Dale City, VA, Mark Mannas of Enid OK, and daughter, Mary Mannas of Tulsa OK. Survived by his sisters, Virginia Dickson of Tulsa OK, Margret Wood of Raleigh, NC, and Ellen Edwards of Tulsa OK. He was preceded in death by his parents. Visitation 5:00 – 6:30 p.m. Wednesday followed by a Rosary at 6:30 p.m., both at Church of Saint Mary. Mass of Christian Burial 10:00 a.m. Thursday, Church of Saint Mary. Entombment at Calvary Cemetery Mausoleum.

Fitzgerald Southwood Colonial Chapel, 918-291-3500