Family of Steward or Stewart of Bristol

I have in my possession a drawing, probably of the time of James or Charles I., of the following arms. Azure a lion rampant or, with a crescent for difference, impaling argent a cross engrailed flory sable between four Cornish choughs proper—Crest, on a wreath of the colours a Saracen's head full-faced, couped at the shoulders proper, wreathed round the temples and tied or and azure. On removing the shield from the paper on which it was pasted, I found a spoiled sketch of the coat of Poulett, with the name Ambrose Moore written over it in a hand of about the reign of Charles I.: the object in…