3 May 1938: Cheshire County Council granted a banner of arms, now the county flag.
8 May 1817: Early paper on Cheshire dialect read at Society of Antiquaries by Roger Wilbraham.
12 May 1278: Fire destroyed much of Chester.
13 May 1983: Lindow Woman bog body discovered.
14 May 1853: Novelist and playwright Hall Caine (pictured) born in Runcorn.
18 May 1980: Musician Ian Curtis committed suicide at Macclesfield.
21 May 1868: First train crossed Runcorn Railway Bridge.
21 May 1894: Manchester Ship Canal officially opened by Queen Victoria.
23 May 1911: Architect John Douglas died in Chester.
24 May 1847: Five people killed in the Dee bridge disaster.
27 May 1899: Eastgate Clock unveiled, marking the 80th birthday of Queen Victoria.
29 May 1905: Widnes–Runcorn Transporter Bridge officially opened by Sir John Brunner.
31 May 1807: Primitive Methodism originated in a prayer meeting at Mow Cop.
31 May 1939: Humanitarian Terry Waite born in Styal.