John Siddall (1782-1870) and his wife, Diana Rowden, natives of London England, moved to the Gore of London Township in 1818, taking up 160 acres of Crown land, lots 7 in Concessions A & B.38 By 1820, Siddall had built this house which still stands, one of the oldest in the area. In 1824, Siddall was commissioned in the 4th Division of the Middlesex Militia as a lieutenant.39
Westminster Township settlers who had been active Masons before coming to the district petitioned the Kingston Convention on November 4, 1820 to form a new Masonic lodge. Mount Moriah, No. 773, began operating in 1820 under a dispensation granted by the Convention. It was continued in 1822 by warrant of the second Provincial Grand Master, Simon McGillvray, Chief Factor of the North West [fur trading] Company of Montreal. From 1820 to 1829, Siddall House was the meeting place of Mount Moriah, the first Masonic lodge established in the London District. The first extant minutes from a meeting on May 12, 1829 recorded John Siddall as Worshipful Master.40
In 1831, Welsh settlers in northwest London Township persuaded Siddall to relocate to the Lobo/London Township line and operate a mill on Nairn Creek. This mill became a great asset to settlers in the area as the nearest grist mill was in Kilworth, twelve miles to the south. In addition to the mill, a blacksmith’s shop, distillery, hotels, stores, and a wagon shop were built, forming the hamlet of Siddallsville.
After Siddall moved to Lobo, the Mount Moriah Lodge met in various taverns: Joseph Flanagan’s and Swartz’ on Commissioners Road, Hartwell’s on York Street, and the Mansion House Hotel on Dundas Street. The lodge was placed under great stress by the Rebellion of 1837, as many members were involved on both sides of the conflict. Mount Moriah formally disbanded in 1847 after several members, including John Siddall, joined St. John’s Lodge 209 in London. 41