She was a pioneering medical practitioner, researcher and social reformer – and the first female doctor to be registered in Wales.

Upon the exclusion of women by the Council of the Worshipful Society of Apothecaries from its professional exams in 1867, Morgan sought her medical education at the University of Zurich, whence Nadezhda Suslova, Russia's first woman physician, had received her degree in December 1867.

There, Morgan completed the medical course in three years rather than the expected five, and in March 1870, became only the second woman to gain an MD (with a thesis on progressive muscular atrophy) at Zürich University.

[6] Following her graduation, Frances did post-graduate work at top medical schools in Vienna, Prague and Paris before returning to Britain.

She spent several years as a medical practitioner working with Elizabeth Garrett Anderson at the New Hospital for Women in London.

She obtained her licence to practice in the UK from The King's and Queen's College of Physicians of Ireland in February 1877.

Welsh government's social justice minister, Jane Hutt, said she hoped the plaque would "make sure her name is elevated to the status she deserves".