 He persuaded his rich friends in London to try it, and by the time Queen Henrietta Maria, wife of King Charles I, visited in 1630 it had established itself as a spa retreat.By 1636 it had become so popular that two houses were built next to the spring to cater for the visitors, one for the ladies and one for the gentlemen, and in 1664 Lord Muskerry, Lord of the Manor, enclosed it with a triangular stone wall, and built a hall "to shelter the dippers in wet weather.