Helen Fraser married Charles Gwynne-Vaughan on 9 September 1907, adopting his surname.
On 9 September 1907, Helen Fraser married Charles Gwynne-Vaughan, a marriage that led her to adopt the hyphenated surname by which she would become known for the rest of her public life and career. The union placed her within the social conventions of Edwardian Britain, where marriage was often expected to curtail a woman's professional ambitions.
Notably, Helen Gwynne-Vaughan did not allow marriage to end her academic career, a choice that was unusual for the period and reflected her determination to continue her scientific work in mycology and botany. The couple later separated, though they never formally divorced, an arrangement not uncommon among professional women of the era who wished to avoid the social and legal complications of divorce while pursuing independent careers.
Her married name, Gwynne-Vaughan, became closely associated with her groundbreaking achievements — from her scientific publications to her military leadership roles during both World Wars. The retention of her professional identity under this name, despite her private marital separation, exemplifies the complex negotiations many pioneering women of her generation made between personal life and public achievement.