Just to get the ball rolling:
Hartman, hon. mrs. — hon. Dorothy, 2 dau. of 1 and last baron Bayford, P.C., T.D. (d. 1940); b. 27 Aug. 1907: m. 1932, Henry Felix Lister Hartman (d. 1963 ); 1 s., 1 dau.: Almeley Manor, Hereford (Eardisley 239).
Source: Kelly's Handbook to the Titled, Landed and Official Classes, Volume 95 - 1969
Henry Felix Lister Hartmann was born 29th May 1901
Source: The Plantagenet Roll of the Blood Royal - 1994