What is Marital Power?

Legal Definition
In civil law jurisdictions, marital power (Latin: potestas maritalis, Dutch: maritale macht, Afrikaans: maritale mag) was a doctrine in terms of which a wife was legally an incapax under the usufructory tutorship (tutela usufructuaria) of her husband. The marital power included the power of the husband to administer both his wife's separate property and their community property. A wife was not able to leave a will, enter into a contract, or sue or be sued, in her own name or without the permission of her husband. It is very similar to the doctrine of coverture in the English common law, as well as to the Head and Master law property laws.
-- Wikipedia