The surname Reachers was first found in Normandy where "Ricardus Risher occurs in the Norman Exchequer Rolls of 1195; and the name still existed in the fifteenth century." 
"In England, we find Robert, Thomas, and Walter Richer mentioned in the Hundredorum Rolls, about 1272, as landowners in Kent; William Richer in Yorkshire; Ralph Richer in Gloucestershire; and Hugh and Henry Fitz Richer in Norfolk." 
Later, a branch settled in Kent, where Robert Richers of Wrotham, "descended from an ancient family of Swanington, Hall, Norfolk." 
Richer of Senones (Richer le Lorrain) (c. 1190-1266) was a French monk and chronicler of Senones Abbey in Lorraine, a traveller. He was one of the very few chroniclers or historians of the Vosges whose complete works have survived.