[1] Yeomans was born on March 29, 1842, in Quebec City, Canada East, to Peter Le Sueur and Barbara Dawson.

Le Sueur married Augustus A. Yeomans, a medical doctor, on October 16, 1860, in Quebec City.

[3] As physicians, Yeomans and her daughter frequently treated sex workers, homeless women, and others being held in the local jail.

On February 9, 1893, Yeomans and the WCTU staged a mock parliament in the Bijou Theatre in Winnipeg, organized by Arminda Myrtal Blakely, and invited the Manitoba legislature to attend.

[4] Yeomans played the premier, while other members, including Nellie Letitia Monney and Ella Cora Hind, presented pro and con arguments.