Topic summary
Adrogation

Extracted from the Wikipedia article Adoption in ancient Rome.
Adrogatio
Adrogation of female adoptees became possible through imperial rescript in the Antonine era (AD 138–192), and under exceptional circumstances a woman could adopt in the same way. In one documented case from the 3rd century, a woman whose sons had died was permitted to adopt her stepson. Since a woman did not transfer paternal potestas, however, adoption accomplished little that could not be achieved through exercising her rights under inheritance law.