Anesius is one of several Christian martyrs in Africa commemorated as saints on March 31. The Martyrologium Romanum mentions Anesius, Theodulus, and Cornelia. All mentioned saints were canonized pre-congregation. Other sources, including Commentarium Historicum ad Universum Romanum Martyrologium, includes other names including Felix, Portus, Abdas (or Abda), and Valeria.
Holweck, F. G. A Biographical Dictionary of the Saints. St. Louis, MO: B. Herder Book Co., 1924.