John Bland and Jane Heron

Looking for information on John Bland born December 13, 1758 who married Jane Heron born November 30, 1766.They had a son Nathaniel Bland born 1788 in Balmaclellan, Kirkcudbright, occupation:Burgh officer/Taylor.Nathaniel died in 1859 and in the 1851 Census he was listed as living at High Street, New Galloway. He married a Mary Smith, born 1801 in England?? and died in 1877.
Jane Heron's parents were John Heron born 1740, death May 12, 1808, occupaton: Weaver/Ballie of New Galloway.His first wife was Jean Clemie(McClymond, McClement). Jean Clemie was also called "Jane Clemie".His second wife was Helen Clark. If you have any information on this Heron/Bland family, I would be very happy to hear from you.