Good luck to them. Kate seems like she's well grounded and well prepared for her role as Princess Consort and then Queen. Diana always had an aura of tragedy about her.. barely knowing her husband before marriage, mismatches in temperament and maturity, and intruding on a long lasting previous love affair. It seems to me the Prince William and Kate Middleton marriage is all that Prince Charles and Princess Diana's match was not.
Were your grand parents heirs the same farm too like their's? They are all from the shallow end of the gene pool.