
The name Rochdale has changed its spelling over the last 1,000 years. The name first appears in writing in the Domesday Book dated 1086 as 'Recedham' which has Anglo-Saxon origins meaning “village”. Around 1190-98 the name “Rachedal” first appeared – from “dael” meaning “valley”.
This modern version of 'Rochdale' is derived from “rockr”, the old Norse for rock and dale from the Norse 'daal' which means a wide valley.
Rochdale was originally covered by a large forest. Early settlers made clearings amongst the trees which were known as 'rods' and so names such as Oakenrod and Coptrod emerged
Sources:
A History of The Parish of Rochdale, H Fishwick
Rochdale and The Vale of Whitworth, William Robertson
Links to the Domesday Book: