It may be added that an earthwork with double lines of Circumvallation in the neighbouring valley of the Tay now known as Barry Hill, is designated by tradition as Mordred's castle."
"Cornwall"
G. E. Mitton
I have not a moment to waste; therefore can only say that I am laying close siege; that my lines of Circumvallation do not proceed quite so rapidly as my desires; but that I have just blown up the main bastion; or, in other words, have prevailed on Sir Arthur to send this hornet, this Frank Henley, back to England.
"Anna St. Ives"
Thomas Holcroft
But, since that the Lord is about our Bed, and about our Path, in the Capital no less than in the Country, and knoweth them that are his, and hideth them under the Shadowe of his Wings-and since that, if the Fiat be indeed issued agaynst us, no Stronghold, though guarded with triple Walls of Circumvallation, like Ecbatana, nor pastoral Valley, that might inspire Theocritus with a new Idyl, can hide us, either by its Strength or its Obscurity, from the Arrow of the Destroying Angel; ye, therefore, seeing these Things cannot be spoken agaynst, ought to be quiet, and do Nothing rashly.
"Mary Powell & Deborah's Diary"
Anne Manning