Charles Stuart Stone, age 78, of Cedar Park, Texas, passed away at his home on March 10th, 2009. Charles was born in Austin, Texas, on February 11, 1931, to parents Dr. Wilson Stuart Stone and Julia Jean (Lampman) Stone. He was a graduate of the University of Texas at Austin School of Pure Mathematics. Mr. Stone founded the Brightline Company in Austin, Texas which, in 1984 was integrated into Frequency Electronic, Inc. Mitchel Filed, New York where he served as Vice President for Advanced Development. Mr. Stone, a life member of the IEEE was the 2005 recipient of the IEEE Cady Award for his outstanding contributions to State-Of-The-Art Low Noise Quartz Oscillators and Low Noise Circuits. He was the author of two major articles and many abstract papers presented at frequency and timing symposiums. Mr. Stone was awarded more than 14 patents for instrumentation and circuit designs which significantly contributed to advancements in low noise quartz oscillator performance. During the past two years, Mr. Stone concentrated on the advanced development of low-g sensitivity quartz oscillators and demonstrated sensitivity performance of better than 1E-11/g. Charles is survived by his wife, Judy and seven children; Dr. James Byron Stone and wife Sherry of Austin, Texas; Dr. Donald Stuart Stone of Madison, Wisconsin; William Henry Stone and wife Laura of Austin, Texas; Robert Gerald Cummins of Cedar Park, Texas; John Matthew Stone, of Buda, Texas, Julie Anne (Cummins) Chandler and husband David, of Escondido, California, and Jennifer Jean (Stone) Jordan and husband Jeffery of Austin, Texas, four grandchildren and two granddaughters.