Thank you for providing the above information.
Lady Jane Spencer and the late Princess Diana were sisters. Therefore their children (Laura Fellowes and Princes William and Harry) are first cousins. What is the nature of the relationship of Laura's two children (Peter Joe and Beatrix Eleanor) mentioned above to Princes William and Harry ? Are they second cousins, or are they first cousins once removed ? And how is the cousin relationship of Laura's children (Peter Joe and Beatrix Eleanor) referred to in regards to William's and Harry's children (George, Charlotte, Louis, Archie, and Lilibet) ?