n14 The declaration of homestead by defendant did not breach her covenant against encumbering or conveying the property. "[A] homestead right is not an estate in the land, but a mere privilege of exemption from execution of such estate as the holder occupies."  It is not a conveyance; it transfers no title or interest in the property.  "[An] encumbrance, within the meaning of a covenant . . . [against encumbrances] had been defined as 'any right to or interest in land which may subsist in third persons to the diminution of the value of the estate to the tenant, but consistently with the passing of the fee.'" The filing of a declaration of homestead creates no rights in third persons, and does not diminish the title of the declarant; it cannot be encompassed within the definition of an encumbrance.