My father told me that his Grandfather, William Jackson Denholm, told him that we belonged to the Stewart of Appin.
William Jackson was born 19 January 1837, in Charlestown and Christened at the United Association Burgh Seceders Limekilns. His parents were Isabel Robertson and Thomas Denholm.
I have not been able to find anything for Thomas Denholm except the Census 1841 and they were living in Inverkeithing.
Thomas was a boat builder.