Commonwealth of Virginia vs Old Dominion

Commonwealth of Virginia

name
  • The official name of Virginia, a constituent state of the United States of America 

Old Dominion

name
  • The nickname given by Charles II of England to the Colony of Virgina, now the official nickname for the state of Virginia in the United States of America 

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