Biography
Margaret Whittemore was a member of the National Woman's Party and one of the "Silent Sentinels" imprisoned during the 1917-1919 campaign to picket the Wilson White House for woman suffrage. Held at the Occoquan Workhouse in Virginia or the District of Columbia Jail, many of these prisoners joined hunger strikes and were force-fed. A National Woman's Party organizer.
Stevens explicitly reports that Margaret Fay Whittemore served twenty-four hours in January 1919 for applauding in court. This is separate from her July 1917 picketing term. Exact custody endpoints are not supplied.
Doris Stevens, Jailed for Freedom, Appendix 4, PDF pages 17.