There a city called Gainsborough.
I know there was a gunmaker called Jackson in it at the beginning of the 20th century
Is it in England or in Australia ?


J-P: There were a number of Jackson’s operating in England, including at least two shown as having had their names on shotgun shells. However, there is no mention of Gainsborough.

John Moss


J-P. There was a gunmaker, Henry George Jackson, at Church Street, Gainsborough, Lincolnshire. 1840-1868. Maybe he is a relative?