Mary Webster is a British actress best known for her 45 appearances as Sarah Onedin in the BBC nautical drama The Onedin Line 197179 Websters first television appearance was in The Man from the South for Cameo Theatre 1955 She went on to appear in among others A Christmas Carol 1958 William Tell 1958 The Moonstone 1959 Dixon of Dock Green 1963 Dr Finlays Casebook 1963 Redcap 1964 Danger Man 1965 The Troubleshooters 1966 Adam Adamant Lives 1966 Jackanory 1968 Softly Softly 1968 ZCars 1970 and The Onedin Line 197179 She appeared in the 1961 film Master of the World Webster is married to William Slater who directed several episodes of The Onedin Line Description above from the Wikipedia article Mary Webster actress licensed under CCBYSA full list of contributors on Wikipedia