Meaning of "Emerod," "Caredon."

In the Lansd. MS., British Museum, No. 70., there is a letter from Mr. Richard Champernowne to Sir Robert Cecil, dated in 1592, referring to the discovery of some articles pillaged from the Spanish carrack, which had then recently been captured and taken into Dartmouth harbour. Amongst these articles is one thus described:—"An Emerod, made in the form of a cross, three inches in length at the least, and of great breadth." In the same volume of MSS. (art. 61.) there is the description of a dagger "with a hefte of white Caredon." From the size of the cross described, "Emerod" can scarcely be rea…