At the time of the 1900 Federal Census of Youngstown, Mahoning County, Ohio, Veronica Gleason (also Gleeson) was three years old, residing in the home of her uncle, John Murphy, born in Ireland about 1869. Veronica was born in January 1897 in Ohio; father born England, and mother born in Ireland.

A news article in the Beaver County, Pa. Daily Times (Rochester section), August 1, 1919, stated: "Miss Veronica Gleason, a nurse at the St. Francis Hospital, Pittsburgh, is visiting her sister, Mrs. John Venn and family of Hull St." - A similar article appeared the next year but the Venns lived on Riverview Street. The sister, Marie Gleason Venn, 33, died March 10, 1925 at Rochester, Beaver County.

Veronica is named in a 1922 history of the Pittsburgh Red Cross as a St. Francis nurse graduate who was "in active service with the American Expeditionary Forces and in the United States."

Veronica G. Gleeson, Nurse, 201 South Millvale Avenue, Pittsburgh, served in World War I, according to Ohio Soldiers in WWI, 1917-1918. She was born in Youngstown, January 31, 1897 and was in the Army Nurse Corps from October 9, 1918 and was stationed at Base Hospital, Camp Lee, Virginia to December 25, 1918. From there she went to Walter Reed Hospital, Washington, DC. She was honorably discharged on March 23, 1919.

At the time of the 1920 census, Veronica was again living on South Millvale Avenue, employed as a nurse for a private family. She is mentioned in her sister's obituary in 1925, but nothing was found after that.