According to THE SOURCE, Arlene Eakle and John Cerny, Ancestry Publishing
Co., Salt Lake City, Utah, 1984. The legal age to:

• Witness documents, testify in court, choose a guardian, serve as apprentice, show land to processioners, be punished for a crime, sign contracts, act as executor, bequeath property, marry: Males-14, Females-12
• Muster into militia: Males only-16
• Take possession of land holdings: 16 "In possession of" on tax rolls signifies that the person is at least 16 years old.
• Release of guardian: Male-21, Female-18
• Own land: 21 (some states allowed females to own land at 18)
• Devise land by will, be taxed, plead or sue in court, be natualized, fill public office, serve on jury, vote: Age 21