Marriage by _confarreatio_ was the only form that required religious ceremonies. This was the most solemn and stately form of marriage as well as the oldest. By it the wife came into the absolute power of the husband by sacred laws but likewise she became a partner in all his substance and in his sacred rights. In case of the husband's death without will the wife inherited equally with the children and if no children then she inherited his whole fortune. This was a public ceremony, conducted by the pontifex maximus or the flamen dialis, in the presence of at least ten witnesses, and the bridal couple tasted a cake made of a sort of wheat called _far_, which with a sheep, was offered in sacrifice to the gods. The priests themselves had to be married by this ceremony and none but the children of such marriage could ever become flamen of Jupiter, Mars, or Quirinus, or vestal virgins. A true marriage could be made only between Roman citizens, but as Roman citizenship became widely extended there was thus much latitude for choice. The lowest age for marriage was fixed by law at fourteen for the males and twelve for the female, but usually the girl did not marry before fifteen or sixteen and the boy not till he attained manhood, yet there were a number of instances of early marriages. A woman of twenty or a man of twenty-five who was not a parent became liable to the decree of Augustus against celibacy and childlessness. All within the sixth degree of relationship were originally prohibited from marriage, but later this was lowered to relatives of the fourth degree and when, in 49 A. D., the Senate permitted the Emperor Claudius to marry Agrippina, the daughter of his brother Germanicus, it was lowered to the third degree. But a woman was not permitted to marry her maternal uncle nor a man either his paternal or maternal aunt.