Just a kindly tip: it's not a crest, but a coat of arms. The crest would be the Pelican at the top. By the way, do you have a grant for these arms or did you purchase them somewhere? The reason I am inquiring is because I saw a very similar blazon in the The General Armory of England, Scotland, Ireland, and Wales, Comprising a Registry of Armorial Bearings from the Earliest to the Present Time, VOLUME 3 ONLY:

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Coats of arms are only granted to individuals in Scotland and England, not to everyone bearing the same surname. In fact, bearing the arms of someone else is illegal in Scotland.