Seeking info on John Maginnis various spellings. He was born about 1803 County Down, married Catherine O' Rourke ( no date) and had children Eliza, Sarah ( both baptised in Ireland, 1832 and 1835) and Ann. In 1851 he was living with his family in Granby Row Manchester as a master shoemaker. His mother Sarah aged 77 is also at that address. I don't know how to proceed further back to find his father, mother's maiden name etc. Any help would be appreciated