17/03/2024

Duke of Ormond's Ciphers during the 1660s

I added a section "Marquis of Ormond's Correspondence" in "English Ciphers during the Restoration Period". It covers some reconstructed ciphers used by the Duke of Ormond, the Earl of Anglesey, the Earl of Arran, and the Earl of Longford.
The Ormond-Anglesey Cipher used in 1663-1664 appears to be based on a printed template of DECODE R433. This shows the template was used as early as 1663.

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