The “Hungerford knot” or “Dacre knot” is sometimes found alone, but is usually found binding other charges together, as in the badge of Lord Dacre of Gilsland, c.1520 [Walden 239].
Magdalena Hungerford bears: Per saltire vert and Or, a Hungerford knot counterchanged.
Brigid Findlater bears: Argent, on a bend azure four Hungerford knots palewise Or.