earliest record shown on Lancashire - OPC
Marriage: 29 May 1736 St Michael, Cockerham, Lancashire, England
Leonard Imison - Cockerham
Isabel Bainbridge - Cockerham
Register: Marriages 1695 - 1744, Page 22, Entry 1
Source: LDS 1278859
not Edwin and Isabel but Leonard and Isabella - are these earlier than your Edwin and Isabel?
Baptism: 7 Jun 1744 St James, Haslingden, Lancashire, England
Christopher Imeson - Son of Leonard Imeson & Isabella, his wife
Abode: Haslingden
Occupation: Officer of Excise
Source: Original Parish Register at Lancashire Archives