28 December 1918 Constance Markievicz was the first woman elected to the UK House of Commons, though, being in Holloway Prison at the time and in accordance with her (Sinn Féin) party policy, she did not take her seat.
Constance Markievicz. article from Wikipedia https://en.wikipedia.org/wiki/Constance_Markievicz
Pathé Gazette Newsreel “Countess Markievicz Sinn Fein - Only Woman Returned In Irish Elections 1918”     https://www.youtube.com/watch?v=VmqU_e_XicA


BALLAD OF COUNTESS MARKIEVICZ  - The Poxy Boggards       https://www.youtube.com/watch?v=fnWW_jFDuA4
CONSTANCE MARKIEVICZ   - Lissadell       https://www.youtube.com/watch?v=0-TJj4_503w
COUNTESS MARKIEVICZ   - Karan Casey & Dónal Clancy       https://www.youtube.com/watch?v=HjUMqCWA6n4
A BATTLE HYMN words by Constance Markievicz   - sung by Austin Gaffney       https://www.youtube.com/watch?v=rWFJMwISmMo