Horsham Monthly Meeting was established in 1782 out of Abington Monthly Meeting by Philadelphia Quarterly Meeting. It was transferred to Abington Quarterly Meeting in 1786. Two meetings emerged at the time of the Separation of 1827. Horsham Monthly Meeting (Orthodox) was discontinued in 1827, and its members attached to Abington Monthly Meeting (Orthodox). The Hicksite monthly meeting is the forerunner of the current Horsham Monthly Meeting.
From the description of Correspondence concerning membership, 1962-1965. (Swarthmore College). WorldCat record id: 53167895