Christine Anne "Chris" Weatherhead (born January 11, 1948) appeared as Meg Callahan the daughter of former wildcatter Blackie Callahan, who is also an old friend of Jock Ewing, who also helped J.R. find the town where he had his first oil strike, in two episodes of the original Dallas TV series, the episodes "I Dream of Jeannie" in Season 13 and "Fathers and Sons and Fathers and Sons" in Season 14 of the series.