It looks most like a black dragon couchant on a red field, which is not a Scottish bearing.

The lady is French, doubtless, and passes through from Ireland to visit the Chancellor's Court at Edinburgh." The Black Douglas paused a moment at the tent-flap, which, being of silken fabric lined with heavier material, hung straight and heavy to the ground.
"Come in, my lord," cried the low and thrilling voice of his companion from within.

"With both hands I bid you welcome to my poor abode.

A traveller must not be particular, and I have only those condiments with me which my men have brought from shipboard, knowing how poor was the provision of your land.

See, do you not already repent your promise to sup with me ?" She pointed to the table on which sparkled cut glass of Venice and rich wreathed ware of goldsmiths' work.