Sanquhar is a town on the River Nith in Dumfries and also Galloway, Scotland. It lies north of Thornhill and also west of Moffat. It is a previous Royal Burgh. Sanquhar is noteworthy for its tiny post office, developed in 1712 and held to be the earliest working post office on the planet. It was additionally the place where the Covenanters, that opposed episcopalisation of the church, signed the Sanquhar Declaration relinquishing their allegiance to the King, an event honored by a monolith generally road. The church of St Brides contains a memorial to James Crichton, a 16th-century polymath. The ruins of Sanquhar Castle stand nearby. Nithsdale Wanderers, the local team, were developed in 1897. In 1924-- 25, Wanderers won the Scottish Division Three.