Nicholas Brandram is the son of Paul Brandram and his first wife, Jennifer. He is a grandson of Princess Katherine of Greece, youngest child of King Constantine I and Queen Sophie of the Hellenes. After her marriage, Katherine was styled in the UK as The Lady Katherine Brandram.
The article was written by a Daily Mail reporter, Harriet Arkell, who doesn't have a clue about good research. She claims the late Lady Katherine Brandram and Prince Philip were distant relatives. They were first cousins, as their fathers were brothers! Typical sloppy work by a Mail "reporter."