The old boys school was used as a Masonic Hall by St. Deiniol's Lodge no.3272, and in 1912 the lodge purchased the building from the Church Authorities.
Defnyddiwyd hen ysgol y bechgyn fel Neuadd y Seiri Rhyddion gan Gyfrinfa Sant Deiniol rhif 3272, ac yn 1912 prynodd y gyfrinfa’r adeilad gan Awdurdodau’r Eglwys.