Londinium vs Old Blighty

Londinium

name
  • Synonym of Modern London A city in England, United Kingdom 

  • A city in Britannia, Roman Empire An ancient settlement in the area of modern London. 

Old Blighty

name
  • Great Britain, Britain, or England, especially as viewed from abroad 

How often have the words Londinium and Old Blighty occurred in a corpus of books? (source: Google Ngram Viewer )