But after it has been settled between the Lord and the Heir of the Tenant concerning the giving and receiving of the reasonable Relief, the latter may exact reasonable Aids from his Homagers.[354] This, however, must be done[355] with moderation, keeping in view the extent of their Fees, and the circumstances of the Tenants, least they should be too much oppressed, or lose their Contenement.[356] But nothing certain is fixed, concerning the giving or exacting Aids of this description, unless that the form we have mentioned should be inviolably observed. There are also other cases, in which a Lord can exact from his Homagers similar Aids, observing, however, the principle we have laid down: as if his Son and Heir should be made a Knight, or if he should marry off his Eldest Daughter.[357] But, whether Lords can exact these Aids to maintain their own Wars, is doubtful. The opinion that prevails is, that they cannot by right distrain their Tenants for such purpose, unless so far as the Tenants may feel disposed. But, with respect to the rendering of reasonable Aids, Lords may of right, without the King’s precept, or that of his Justices, but by the Judgment of their own Court, distrain their Tenants by such of their chattels as may be found within their Fees, or by their Fees, if necessary; provided the Tenants are dealt with according to the Judgment of the Court, and consistently with the reasonable Custom of it. If, therefore, a Lord may thus distrain his Tenants[358] to render such reasonable Aids, much stronger is the argument in favor of its being lawful for him to distrain in the same manner for a Relief, as also for any other service necessarily due to him, in respect of the Fee. But if a Lord is unable to compel[359] his Tenant to render his services or Customs, then recourse must be had to the Assistance of the King, or his Chief Justice, and he shall obtain the following Writ—— [Footnote 354: “Aids were, at first, benevolencies of the Vassals, and were given during the great festivity, or the great necessity of the Lord upon three occasions—to wit—when his Son was knighted, when his Daughter was to be married, and when his person was to be ransomed: but what originally flowed from regard, Superiors soon changed into a matter of duty, and on a gratuity erected a right.” (Dalrymp. on feuds, p. 52.)—Speaking of aids, Mr. Madox informs us, that King William the First took 6s. of each Hyde through England—King Henry the First took 3s. for each Hyde, as aid _pur fille marier_. But he adds, that, for want of requisite notices, he could not speak distinctly of them. (Hist. Exch. c. 15. s. 1.) The Reader may also be referred to _Traités sur les Coutumes Anglo-Norm. par M. Houard_. 1. 265. 518.] [Footnote 355: By the Norman Code it was fixed at half the Relief paid by the mesne to the Chief Lord. (Grand Cust. c. 35.)]