His writings include a history of Cumnor, included in the 8-volume Bibliotheca Topographica Britannica (1780–90) by John Nichols. He also defended one of the college's traditions. It was said a mallard had been discovered when the foundations were laid in 1438, and this was commemorated in the singing of the Mallard Song from the 17th century onwards every 14 January, the feast day of Hilary of Poitiers. (The song is now sung every 100 years.) In 1749, the author of Oxoniensis academia, John Pointer, alleged that the bird in question was only a goose; Buckler replied in 1750 with A Complete Vindication of the Mallard of All Souls College, although he did so anonymously.
He supported the Tory cause in articles and in his only published sermon. In 1765, he published a genealogical table of the families entitled to claim fellowships of All Souls by virtue of a relationship to the founder, Archbishop Henry Chichele; he and Blackstone were opposed to those graduates with only family ties behind them. He died on 24 December 1780 at Cumnor, where he was buried.[1]