The Hertfordshire Imperial Yeomanry Lodge (No 3192) was consecrated 6 December 1906. The Lodge last met on 2nd of December 2025.
The Lodge was consecrated at Restaurant Frascati, London, as a London Lodge by V. W. Bro Sir Edward Letchworth, the Grand Secretary. One of the founders was Bro T.F. Halsey, the Deputy Grand Master and Provincial Grand Master of Hertfordshire, a Lieutenant Colonel in the Regiment. The sponsoring Lodge was Acacia Lodge No. 1314. The Lodge was established for the convenience of all ranks who served with the Herts Yeomanry Cavalry, the 42nd Company Imperial Yeomanry (1900-01), the Herts Imperial Yeomanry, the Herts Yeomanry (Territorial Forces), Permanent Staffs thereof and for sons of the aforesaid. The Lodge transferred to Hertfordshire on 11th September 1991.