In the 16th century domestic cloth weaving became important, and an Act of Parliament regulated the length of "Manchester Cottons" (which were actually woollens) to 22 yards. By 1641 Manchester was producing both cotton and linen cloth. A bequest from wealthy cloth merchant, Humphrey Chetham was responsible for the Chetham's School and Library in the mediaeval collegiate building. St Ann's Church, attributed to Wren or one of his pupils, was built in 1712 in St Ann's Square which became the fashionable area of town. Seven other churches were built during the 18th century, none of which survives. St James Square (1735) was built by the Jacobites. Planned development occurred in the 1750s between Market Street, Cross Street, King Street and Mosley Street.