Testimonium Clause Law and Legal Definition

Testimonium clause is the last section of a will or conveyance reciting the date when an instrument was signed, by whom it was signed, and in what capacity. Before signing a deed, a grantor should make sure that everything is in order like the spelling of names and legal descriptions. The clause "In witness whereof the parties to these presents have hereunto set their hands and seals this day and year written above" is an example of this clause. This is also referred to as testatum clause or witness clause.