I am 99% certain the answer to your question is yes. Mary Wraight married John Clifford in Q4 1881 in Malling. She was the daughter of James Wraight brother of Mary, John Cliffords mother. Guess that makes John and Mary cousins.
I say 99% as the 1% is for a margin of error as I have not certificate to back it up and do not remember where I got the original info - only that I did!
I have a spreadsheet of the wraight family and there various strand which I can let you have if you are interested.