Sir Thomas Erskine of that Ilk Peerage person ID=109196 (1354–1404) Parents Sir Robert Erskine of that Ilk Beatrice de Lindsay Children John Erskine, 1st of Dun Robert Erskine, 1st Lord Erskine unknown daughter Erskine Elizabeth Erskine Siblings Marion Erskine Nichol Erskine Eleanor Douglas William Douglas, 1st Earl of Douglas Partners unknown daughter Douglas Janet Keith