[5] In his My Life and Times, Compton Mackenzie reports that "In 1880 Marie Hassall had married Charles Boote, who had deserted a puritan home in Nottingham to go on the stage.

"[6] A study of the Compton Comedy Company records that "Marie Hassall, an Irish Catholic actress", was left with a three-year-old daughter when her husband Charles Boote was killed by a star trap while playing Harlequin.

[9] The autobiography of Faith Compton Mackenzie (1878–1960), As Much as I Dare (1938) recalls that "...the most notable person in the company was the handsome Marie Hassall, mother of Rosie Boote, now Marchioness of Headfort.

[1] On 11 April 1901, at Saltwood Registry Office, near Folkestone, Kent, Rosie Boote married Geoffrey Taylour, 4th Marquess of Headfort, against his family's wishes and causing an international sensation.

[11][12] "Tremendous efforts were made to prevent the marriage by all Lord Headfort's relatives and friends," noted a 1903 summary of the event; even the King attempted to discourage the match.