Origin of 'intestinal fortitude'

I first heard this phrase in the mid 70s. Any clues on earlier use?

I found three cites that attribute its coinage to Dr. John Wilce, a football coach and professor of clinical medicine at Ohio State University. Wikipedia (I know, I know, but bear with me) dates its first public use to a lecture he gave in 1916; in his paper, “Jacques and the Fat Man: Physical Culture and the Abdomen in Modern France” (warning - PDF file), Christopher Forth, of the Australian National University, cites its first use “by John Wilce sometime after 1913”, and in American Speech, Vol. 30, No. 3 (Oct., 1955), Tom Burns Haber said, “the euphemism has been in existence for about four decades”, which would place its first use around 1915.

From Wiki

The Origin of ‘Intestinal Fortitude’ Tom Burns Haber
American Speech, Vol. 30, No. 3 (Oct., 1955), pp. 235-237

samclem may have access to the complete article.

Hmm. . . much earlier than I would have expected. Thanks.

I think the others have pretty well nailed it. The only thing I can add is that it starts to get into the popular newspapers only around 1926-28.

I use the phrase intestinal fortitude as a less vulgar form of the word guts, in the sense of courage, bravery.

How much older is guts in this sense than intestinal fortitude?

Si

That’s the way I’ve always heard it, as a euphemism for “guts,” when the context calls for a term less colloquial or vulgar.

I don’t have my OED onhand, but Etymology Online attests it from 1893. While not the gospel, they’re usually pretty good.

“Guts” to mean intestinal fortitude is only cited from the 1890’s. It wasn’t a polite word in the Victorian Era, so it didn’t get used in print much.

Here’s a post from over at the American Dialect Society Mailing LIst.