IGI has
3. JOHN COCKER - International Genealogical Index Gender: Male Marriage: 25 DEC 1829 Saint Peter, Leeds, Yorkshire, England
to GRACE ROGER
In the 1881 census he was 28 and living with his family at 7 Hedley Hill, Hedleyhope. He was a blacksmith - probably working with George Morgan of 8A Hedley Hill.