De La More: A silver shield with a red saltire and a red border with bezants. De La Mare: A silver shield with three black boars heads.
But accept that the De La More's of this family may have different arms to those listed above. Would you know where there is an original of this 'Ellerker of Risby', shield and not just a hand drawn version? I would be interested to see it.
I think I was also fooled in that in Risby church is a fairly modern carved crest above a screen. This is of a rooster/cockerel. Also the Crest of the Blakistons. However the Hildyard family associated with Risby had a Rooster as their Crest.----Foiled again. LOL