Aes hordearium was a tax on orphans (orbi) and widows or single women (viduae), it was levied to pay for the upkeep of the horses of the equus publicus.[5][6]
Marriageedit
Aes uxorium was a tax on unmarried men and women who could bear children.[7]
^Harry Thurston Peck. Harpers Dictionary of Classical Antiquities. New York. Harper and Brothers. 1898. This article incorporates text from this source, which is in the public domain.
^Jane F. Gardner, "Nearest and Dearest: Liability to Inheritance Tax in Roman Families," in Childhood, Class and Kin in the Roman World pp. 205, 213.