E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Three Holes in the Wall (The),
to which Macaulay alluded in his speech, September 20th, 1831, are three holes or niches in a ruined mound in the borough of Old Sarum, which before the Reform sent two members to Parliament. Lord John Russell (March, 1831) referred to the same anomaly. (See Notes and Queries, March 14th, 1885, p. 213.)