Does the devise of the dwelling house include only the house?

Generally the devise of the dwelling house mean the home and real property on which it stands. The contents of the house are personal property. Usually a will provides more explicit instructions for the distribution of the personal property inside the house. If not, that property may pass into the "residue" of the estate and would be shared by the heirs as intestate property. You should seek the advice of the attorney who is handling the estate. The estate must be probated if there is real property in order that the title to the real property will vest in the devisee.