I have a portrait of my GGG Grandfather - Rev. Andrew Hamilton (1772 - 1839), minister of the High Kirk, Kilmarnock c.1804 - 1839. The work is unsigned.
I have been researching portrait painters active in Kilmarnock during this period and believe JKH a good candidate.
Particularly interested to see more of his work.
(Familiar with those images online previously mentioned via the Ayrshire History site).
Happy to share an image of the painting and hear opinions.