Caul

Ne spared they to strip her naked all. / Then when they had despoild her tire and call, / Such as she was, their eyes might her behold […]

I was born with a caul, which was advertised for sale, in the newspapers, at the low price of fifteen guineas.

Even in the mid seventeenth century a country gentleman might regard his caul as a treasure to be preserved with great care, and bequeathed to his descendants.