Prior to the modern designation of 21 as the age of majority, different ages applied: If the fee is a military fee, the heir will be of full age when he has completed his twenty-first year and reached his twenty-second If he is the son and heir of a sokeman, when he has completed his fifteenth year If he is the son of a burgess, he is taken to be of full age when he knows how properly to count money, measure cloths and perform other similar paternal business 12 Thus it is not defined in terms of time but by sense and maturity A woman may be of full age [in socage] whenever she can and knows how to order her house and do the things that belong to the arrangement and management of a house, provided she understands what pertains to 'cove and keye,' which cannot be before her fourteenth or fifteenth year since such things require discretion and understanding -- from Bracton's Laws c 1400
Refers to a child who has attained "legal age" or "adulthood " In Kentucky, the age of majority is 18 or age 19 for an unmarried child who is a full-time high school student, but not beyond the completion of the school year during which the child reaches the age of 19 years The age of majority is generally the age at which support payments are terminated unless the child is still in high school or is disabled