“All kinds of legends are current about Rostherne, as is the case
with most lakes which are reported to be deep. One is, that a mermaid
comes up on Easter Day and rings a bell; another, that it communicates
with the Irish Channel by a subterranean passage; another, that it
once formed with Tabley, Tatton, Mere, and other lakes, a vast sheet
of water that covered the country between Alderley Edge and High
Leigh.”--Hope, _Holy Wells and Traditions_.