E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Cross-legged Knights
indicate that the person so represented died in the Christian faith. As crusaders were supposed so to do, they were generally represented on their tombs with crossed legs.
1
Sometimes the figure on the tomb of a knight has his legs crossed at the ankles, this meant that the knight went one crusade. If the legs are crossed at the knees, he went twice; if at the thighs he went three times.Ditchfield: Our Villeges, 1889.