Stafford knot (Period)

The “Stafford knot” is one of the best known heraldic knots.  It’s seen on the standard of Henry Stafford, Earl of Wiltshire c.1520 [Walden 101].  The modern term “overhand knot” refers to this knot.

Uilliam Twit of Witlow bears:  Per fess gules and Or, three Stafford knots counterchanged.