A New Hampshire Subpoena to Testify at Deposition is a legal document that requires a witness to appear in court to testify in a deposition. The subpoena can be issued by the court or by an attorney on behalf of either party. The subpoena must state the witness’s name, address, date and time to appear at the deposition, and any other relevant information. The witness must appear at the designated location on the specified date and time, and provide testimony as required. There are two types of New Hampshire Subpoena to Testify at Deposition: a Subpoena Ducks Cecum and a Subpoena Ad Testificandum. A Subpoena Ducks Cecum requires a witness to bring documents or other tangible evidence to the deposition. A Subpoena Ad Testificandum requires a witness to attend the deposition and provide testimony only.