He was sometime prisoner in Edinburgh castle before he went into exile, where one night sitting at supper with the Lord Ochiltry, who was uncle to Mr. Welch's wife, as his manner was, he entertained the company with godly and edifying discourse, which was well received by all the company, except a debauched popish young gentleman, who sometimes laughed, and sometimes mocked and made wry faces; whereupon Mr. Welch brake out into a sad abrupt charge upon all the company to be silent, and observe the work of the Lord upon that profane mocker, which they should presently behold; upon which the profane wretch sunk down and died beneath the table, to the great astonishment of all the company.

- From "The Life of Mr. John Welch" in John Howie's Biographia Scoticana: or, A Brief Historical Account of the Lives, Characters, and Memorable Transactions of the Most Eminent Scots Worthies (p. 143, second edition, corrected and enlarged, 1781), more commonly know as just Scots Worthies.

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