The pseudo-Council of Sinuessa was a purported gathering of bishops in 303 at Sinuessa, Italy, the purpose being a trial of Marcellinus on charges of apostasy. It is generally accepted that the gathering never took place and that the purported council documents were forged for political purposes in the 6th century during the schism between Pope Symmachus and Antipope Laurentius. The collection of forgeries, including the Council of Sinuessa, is collectively known as the Symmachian forgeries.