If my wife and I bought our house before we were married and her maiden name is on the deed, if I die does it cause any ownership issues for her?

It depends on how  you hold title. Does she have rights in survivorship? That is, a survivorship deed means that the death of one party causes the property to devolve to the living owner. Otherwise, you may own the property as tenants in common.  When two or more people own community property like a home, either as joint tenants or tenants in common, each individual owns a share (or interest) of the entire property.  However, if you are simply worried about her name, its a very easy issue cleared up with an identity affidavit (worst case scenario) More than likely, even that is unnecessary. I'm sure your wife has ample means of proving identity.