Campbell, John Macleod , a Scotch clergyman, born in Argyll; deposed from the ministry of the Scotch Church in 1831 for his liberal theological sentiments; a saintly man, whose character alone should have protected him from such an indignity; his favourite theme was the self-evidencing character of revelation, while the doctrine for which he was deposed, the Fatherhood of God, is being now adopted as the central principle of Scotch theology; he continued afterwards to ply his vocation as a minister of Christ in a quiet way to some quiet people like himself, and before his death a testimonial and address in recognition of his worth was presented to him by representatives of nearly every religious community in Scotland (1801-1872).
— from The Nuttall Encyclopædia Being a Concise and Comprehensive Dictionary of General Knowledge by P. Austin Nuttall