b. 26 January 1892, Denver, Colorado, USA, d. USA. Robertson’s rarly Broadway appearances included See-Saw (1919), The Perfect Fool (1921), Daffy Dill (1922), with Irene Olsen, songs by Herbert Stothart and Oscar Hammerstein II, Wildflower (1923), starring Edith Day, music by Stothart and Vincent Youmans, and Song Of The Flame (1925). In the late 20s, baritone Robertson hoped to lead in Show Boat but delays prompted him instead to The Circus Princess (1927), by Emmerich Kálmán and Harry B. Smith, singing ‘But Who Cares?’, ‘Dear Eyes That Haunt Me’, and, with Desiree Tabor, ‘The Blue Eyes I Dream Of’. He was in Lovely Lady (1927) and White Lilacs (1928), music by Karl Hajos, book and lyrics mostly by Smith. In the latter, Robertson played Frédéric Chopin, singing ‘Inspiration’, ‘White Lilacs’, a duet with Grace Brinkley with lyrics by J. Keirn Brennan, and three duets with co-star Odette Myrtil, ‘Far Away And Long Ago’, ‘Melodies Within My Heart’ and ‘Be Happy In Your Dreams’. He was in The Street Singer (1929), music by John Gilbert, Nicholas Kempner and Sam Timberg, lyrics by Graham John. Directed by Busby Berkeley, the show featured Queenie Smith, Cesar Romero and Andrew Tombes.
Robertson co-starred with Ethelind Terry in Nina Rosa (1930), songs by Sigmund Romberg and Irving Caesar, Marching By (1932), All The King’s Horses and The Great Waltz (both 1934). In the latter, music by the Strausses, lyrics by Desmond Carter, Robertson played the role of Johann Strauss II. He sang duets with Marion Claire: ‘You Are My Songs’, ‘Love Will Find You’ and ‘While You Love Me’. Robertson was also in Right This Way (1938), music by Brad Greene, lyrics by Marianne Brown Waters, singing their ‘Song In The Night’ and the title song, both duets with Tamara. Also with Tamara he sang ‘I Love The Way We Fell In Love’, an interpolated song by Sammy Fain and Irving Kahal. He also toured in shows such as Glamorous Night, Music In The Air, Wild Violets, Salute To Spring and Of Mice And Men. In 1939 he was a replacement cast member in Very Warm For May, his last credited Broadway show. On radio in the 30s, Robertson was the singing host of Broadway Varieties. Rarely in films, Robertson played the title role in King Kelly Of The U.S.A. (1934), co-starring with Irene Ware.