Found: Sir Walter Giffard's correct coat of arms

After more searching, I have found what is the correct coat of arms for Walter Giffard.  It is not a blue background with silver lions, but a red background with silver lions (the blue shield is a later, cadet branch of his family).  His blazon may be found in several books, including the authoritative Sir Bernard Burke, "The general armory of England, Scotland, Ireland, and Wales:", copyright 1864.

Blazon: gules three lions passant in pale argent

see the image for Walter Giffard's Coat of Arms at 

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