The same observations hold good in regard to other customs which come to be considered as implying personal servitude[300]. Merchet was the most striking consequence of unfreedom, but manorial documents are wont to connect it with several others. It is a common thing to say that a villain by birth cannot marry his daughter without paying a fine, or permit his son to take holy orders, or sell his calf or horse, that he is bound to serve as a reeve, and that his youngest son succeeds to the holding after his death[301]. This would be a more or less complete enumeration, and I need not say that in particular cases sometimes one and sometimes another item gets omitted. The various pieces do not fit well together: the prohibition against selling animals is connected with disabilities as to property, and not derived directly from the personal tie[302]; as for the rule of succession, it testifies merely to the fact that the so-called custom of Borough English was most widely spread among the unfree class. The obligation of serving as a reeve or in any other capacity is certainly derived from the power of a lord over the person of his subject; he had it always at his discretion to take his man away from the field, and to employ him at pleasure in his service. Lastly, the provision that the villain may not allow his son to receive holy orders stands on the same level as the provision that he may not give his daughter in marriage outside the manor: either of these prohibited transactions would have involved the loss of a subject. [Control over the movements of the peasantry.]