I am looking for a distant Derington cousin. He was born probably in 1948-1949 and probably in Oklahoma. He had an older half-brother. His mother was married but not to his father and divorced at some point from her husband. She was his father's secretary (he was a Civil Engineer and worked in heavy construction) in either Tulsa or Muskogee, Oklahoma at the time of his birth. She and her two sons moved to Lawton, Oklahoma probably between 1958-1960 when his father started his own construction company and his mother once again was his secretary/bookkeeper/office manager. They left Lawton about 1960-1965 and I have been told they moved to VanAlstyne, Grayson County, Texas. He kept his mother's married name I believe. That name may have been Moore or Miller but this is not for sure. His father was Robert L. Derington but can sometimes be spelled Derrington