In the Canadas, the United Presbytery of the Canadas was formed in 1818, as a looser arrangement of clergy supported by other groups. By 1839 this United Synod (at one time there were three presbyteries) was absorbed by The Presbyterian Church of Canada in Connection with the Established Church of Scotland, erected into a synod by the parent church in 1831, bolstered with missionaries supplied from the Glasgow Missionary Society. In 1834, this group also began to receive a number of United Synod clergy and congregations, which led to the aforementioned union with the Auld Kirk by 1840.