 She made her London debut, not too many years later, on November 15, 1867, at the Queen's Theatre in Wigan's "The First Night" playing Rose, the intended debutant.In late June, 1868 she appeared at the Queen's Theatre in another Wigan play, "Time and the Hour", of which one London critic said, “It is by no means good, and by no means bad.”

Later in that year she accompanied Lydia Thompson to New York as a member of her "British Blondes", opening at Wood's Museum (Broadway at 30th Street) on September 28, in the burlesque of "Ixion, or the Man at the Wheel".In the piece Markham plays the goddess Venus who is seduced by King Ixion (Thompson).