E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Long Meg of Westminster.
A noted virago in the reign of Henry VIII. Her name has been given to several articles of unusual size. Thus, the large blue-black marble in the south cloister of Westminster Abbey, over the grave of Gervasius de Blois, is called Long Meg of Westminster. Fuller says the term is applied to things of hop-pole height, wanting breadth proportionable thereunto, and refers to a great gun in the Tower so called, taken to Westminster in troublous times.
The large gun in Edinburgh Castle is called Mons Meg, and the bomb forged for the siege of Oudenarde, now in the city of Ghent, is called Mad Meg.
In the Edinburgh Antiquarian Magazine, September, 1769, we read of Peter Branan, aged 104, who was six feet six inches high, and was commonly called Long Meg of Westminster. (See MEG.)
Long Meg and her daughters. In the neighbourhood of Penrith, Cumberland, is a circle of 67 (Camden says 77) stones, some of them ten feet high, ranged in a circle. Some seventeen paces off, on the south side, is a single stone, fifteen feet high, called Long Meg, the shorter ones being called her daughters. (Greek, megas, great.)
This, and the Robrick stones in Oxfordshire, are supposed to have been erected at the investiture of some Danish kings, like the Kingatoler in Denmark, and the Moresteen in Sweden.Camden: Britannia.