In 1635 the choir was transformed through the erection of a partition on the pulpitum into the High Church or, as it came to be called, the Inner High Church.[15] The cathedral eventually came to house three congregations: in addition to the Inner Church, the Outer High Church (whose congregation began worshipping in the nave in 1587) eventually secured a distinct architectural space in 1647 when a stone wall was erected at the east end of the nave, and the Barony Church began worshipping in the Lower Church when that congregation was created in 1595.[16]