Gog of Magog, a figure mentioned in the Hebrew Bible in Ezekiel 38 and 39, and variously identified by later writers with Satan or certain hostile nations. (See Revelation 20:8.)
noun
A person from north Wales.
Old Gentleman
name
The Devil.
How often have the words Gog and Old Gentleman occurred in a corpus of books? (source: Google Ngram Viewer )