Bagwyn rampant (Period)

The bagwyn is a monster similar to an antelope, but with a bushy tail, fringes of fur on the legs, and long swept-back attires.  It was used as a badge by the Earl of Arundel, c.1539 [Dennys 150].

The bagwyn does not seem to have a default posture; the illustration shows a bagwyn rampant.

Aureliane Rioghail bears:  Argent, a bagwyn lodged to sinister pean, attired and unguled Or, gorged of a chaplet of gladiolus flowers Or slipped and leaved vert, and in base a pair of breys, all within a bordure azure.

Crisiant ferch Eirian bears:  Per fess sable and argent, a pale counterchanged, overall a bagwyn rampant guardant gules.