A Memorial With the Well-Known Barclay/Berkeley Coat of Arms

At our next armorial memorial in Canterbury Cathedral, we find the arms of Robert Barclay (also found spelled as Barkley and Berkeley).

Unusually, the memorial plaque does not actually specifically name the person being memorialized.

                   He that’s imprisond in this narrow roome

                   Wert not for custome needs nor verse nor toombe

                   Nor can from theise a memorie be lent

                   To him, who must be his toombs monument

                   And by the virtue of his lasting fame

                   Must make his toombe live long, not it his fame

                   For when this gaudie monument is gone

                   Children of th’ unborne world shall spy y^e stone

                   That covers him, and to their ffellowes crye

                   Tis here tis here about Barkley doth lye

                   To build his toombe then is not thought soe safe

                   Whose virtue must out live his Epitaphe.

There are two shields pendent from the gold surround of the plaque on the face of the monument:

Gules a chevron between ten crosses formy argent.

Gules a chevron between ten crosses formy argent, impaled by [blank, but painted gold].

I have been unable to find any more information about Robert Barclay/Barkley/Berkeley in any of the usual sources (e.g., Wikipedia, guides to Canterbury Cathedral, etc.).