The British-American actress Eva Le Gallienne (1899–1991) was his daughter by his second marriage to Danish journalist Julie Nørregaard (1863–1942).

Rupert Brooke, who met Le Gallienne in 1913 aboard a ship bound for the United States but did not warm to him, wrote a short poem "For Mildred's Urn" satirising this behaviour.

Nørregaard later sent Hesper to live with her paternal grandparents in an affluent part of London while Eva remained with her mother.

Julie later cited his inability to provide a stable home or pay his debts, alcoholism, and womanising as grounds for divorce.

From the late 1920s, Le Gallienne and Irma lived in Paris, where Gwen was by then an established figure in the expatriate bohème[12] and where he wrote a regular newspaper column.

Le Gallienne appealed to a German officer in Monaco, who allowed him to return to Menton to collect his books.

[13] During the war Le Gallienne refused to write propaganda for the local German and Italian authorities and, with no income, once collapsed in the street owing to hunger.

He also wrote the foreword to "The Days I Knew" by Lillie Langtry 1925, George H. Doran Company on Murray Hill New York.

In 2016 an exhibition on the life and works of Richard Le Gallienne was held at the central library in his home city of Liverpool, England.