Cavendish (or Savoy) knot (Period)

The “Cavendish knot” or “Savoy knot” was used as a badge by the House of Savoy since 1362; but it is better known as the badge of Cavendish, Dukes of Devonshire [Woodcock & Robinson 186], though no period examples of its use by that family have been found.  The knot may be called a “figure-eight knot” in non-heraldic contexts.

The Order of the Cavendish Knot, of the Middle, bears:  Four Cavendish knots conjoined in cross vert.