For example, we read that the Anglo-Saxon law held many children at the age of ten responsible for some acts which were forbidden, but that most youth were legally minors until the age of fifteen. Until the early period of the eighteenth century it was still possible for a parent to legally sell his children, "a girl up to fourteen, a boy under seven." And after that period a wayward or troublesome son or daughter, or any of the offspring, when the parents could be proved financially incapable of their care, could be sent to convent or monastery. The ability to bear arms seems to have been the criterion for legal coming of age. The Romans, with their heavy weapons, held the son in tutelage until the age of fifteen. The Germans, with their use of light darts, gave their sons power of self-control at the age of twelve. In the heyday of feudalism "a knight's son became of age when he could swing his father's sword" and "a yeoman's son when he could swing his father's battle-axe," and by that process the fathers were released from liability to punishment for their sons' misdemeanors. On the other hand, after the tenth century, no child under ten could be punished for his father's crimes unless it could be shown that he was a party to them, and the custom of carrying family autonomy so far as to wipe out innocent and guilty alike, when a treason or crime of any sort angered the powers in command, was practically ended. When the beginnings of the modern industrial order appeared and burghers shared with knights and yeomen the social responsibility, "a burgher's son acquired freedom and legal responsibility when he could count and measure broadcloth." The wife gained a growing and perilous freedom from laws which increased her direct relationship to the state. She attained the power of being punished even by the death penalty for broken laws far earlier than she attained the slightest influence in the passage or enforcement of those laws. It was generally thought, however, until very recently, that if a wife "did not behave" it was the husband's fault and right that he should suffer the consequences.