Declaration of Consent to the marriage of HRH The Prince of Wales and Mrs. C. Parker Bowles
"NOW KNOW YE that We have consented and do by these Presents signify Our Consent to the contracting of Matrimony between Our Most Dearly Beloved Son and Most Faithful Counsellor Charles Philip Arthur George, Prince of Wales, K.G., K.T., G.C.B., O.M., and Our Trusty and Well-Beloved Camilla Rosemary Parker Bowles."
“Most Faithful Counsellor” in this case is a reference to Charles being a member of the Privy Council, I suppose.
It is interesting that Camilla still used the name Parker Bowles even though she was already divorced. Why didn’t she revert to her maiden name ?