The Little Brown Brothers
The Little Brown Brothers are a sect of Omnian monks who run hospices in the land of Omnia. It is mentioned in The Compleat Discworld Atlas that they devote their lives to holy works, healthcare, and the distilling of a much-regarded herbal prepartion called hernet. This is intended to be a restorative tonic. The Brothers are based at a holy well at aby Dyal, on the Slipnir River.