Trasa cobern: si robertson's daughter is married to kyle, He and his wife marsha markert robertson have three boys. trasa lee cobern robertson teaches social studies in hurst, texas. according to her facebook. Si robertson kids: uncle si has a daughter, trasa cobern, Uncle si has two children with christine, son scott robertson and daughter trasa robertson cobern. trasa is married to kyle wayne cobern, 46, and they have. Si robertson - wikipedia, the free encyclopedia, Silas merritt "si" robertson (born april 27, 1948), often referred to as uncle si, is an american television personality, preacher, hunter, outdoorsman, former u.s.