What is the etymology of the surname, "Diggs"?

Question:

What is the etymology of the surname, "Diggs"?

I was told that it's of Irish origin, yet I can't find any refrence to this on the internet. Please let me know if this is the case. I wish I could also give extra points to anyone who can provide a meaning for this name. Other family names are more obvious, like Hill for example. Brits named Hill more than likely had ancestors who lived near one. Samething applies to the Smiths, and Joneses of the world. It's not a totally uncommon name, so I'm hoping maybe one of you guys will know...

Best Answer - Chosen by Asker: Beware of coat of arms peddler. You will be furnished a link to a coat of arms.

There are no laws in the United States regarding heraldry and there are companies all over the U.S. that will sell you one based solely on your surname. I understand some will do "research" and 'link" you to an individual that was granted a coat of arms. That is not valid.
A person is free to display one without documented proof that they are entitled to it but is is like putting up a picture of a famous person with their surname and claiming him as their direct ancestor whether they know he is or not.

Not everyone with the same surname comes from the same root.