We observed that tithes are due to the parson of common right, unless by special exemption: let us therefore see, thirdly, who may be exempted from the payment of tithes ... either in part or totally, first, by a real composition; or secondly, by custom or prescription.
First, a real composition is when an agreement is made between the owner of the lands, and the parson or vicar, with the consent of the ordinary and the patron, that such lands shall for the future be discharged from payment of tithes, by reason of some land or other real recompence given to the parson, in lieu and satisfaction thereof.
Secondly, a discharge by custom or prescription, is where time out of mind such persons or such lands have been, either partially or totally, discharged from the payment of tithes. And this immemorial usage is binding upon all parties, as it is in its nature an evidence of universal consent and acquiescence; and with reason supposes a real composition to have been formerly made. This custom or prescription is either de modo decimandi, or de non-decimando.
A modus decimandi, commonly called by the simple name of a modus only, is where there is by custom a particular manner of tithing allowed, different from the general law of taking tithes in kind, which are the actual tenth part of the annual increase. This is sometimes a pecuniary compensation, as twopence an acre for the tithe of land : sometimes it is a compensation in work and labour, as that the parson shall have only the twelfth cock of hay, and not the tenth, in consideration of the owner's making it for him: sometimes, in lieu of a large quantity of crude or imperfect tithe, the parson shall have a less quantity, when arrived to greater maturity, as a couple of fowls in lieu of tithe eggs; and the like. Any means, in short, whereby the general law of tithing is altered, and a new method of taking them is introduced, is called a modus decimandi, or special manner of tithing.: 28–29
A prescription de non-decimando is a claim to be entirely discharged of tithes, and to pay no compensation in lieu of them. Thus the king by his prerogative is discharged from all tithes. So a vicar shall pay no tithes to the rector, nor the rector to the vicar, for ecclesia decimas non-folvit ecclesiae. But these personal to both the king and the clergy; for their tenant or lessee shall pay tithes of the same land, though in their own occupation it is not tithable. And, generally speaking, it is an established rule, that in lay hands, modus de non-decimando non-valet. But spiritual persons or corporations, as monasteries, abbots, bishops, and the like, were always capable of having their lands totally discharged of tithes, by various ways: as
- By real composition :
- By the pope's bull of exemption :
- By unity of possession; as when the rectory of a parish, and lands in the same parish, both belonged to a religious house, those lands were discharged of tithes by this unity of possession :
- By prescription; having never been liable to tithes, by being always in spiritual hands :
- By virtue of their order; as the knights templars, cistercians, and others, whose lands were privileged by the pope with a discharge of tithes. Though, upon the dissolution of abbeys by Henry VIII, most of these exemptions from tithes would have fallen with them, and the lands become tithable again; had they not been supported and upheld by the Suppression of Religious Houses Act 1539 (31 Hen. 8. c. 13) which enacted, that all persons who should come to the possession of the lands of any abbey then dissolved, should hold them free and discharged of tithes, in as large and ample a manner as the abbeys themselves formerly held them.
And from this original have sprung all the lands, which, being in lay hands, do at present claim to be tithe-free: for, if a man can shew his lands to have been such abbey lands, and also immemorially discharged of tithes by any of the means before-mentioned, this is now a good prescription de non-decimando. But he must shew both these requisites; for abbey lands, without a special ground of discharge, are not discharged of course; neither will any prescription de non-decimando avail in total discharge of tithes, unless it relates to such abbeylands.: 31–32