http://www.legislation.gov.uk/aep/Cha2/22/7/section/II/enactedDuchy of Cornwall (No. 2) Act 1670enBritish History Onlinebho/pubid-351/47415.xml2024-12-11 IIRents to be reserved.Provided alwayes That every such Lease or Grant soe made, or to be made shall not be made for more then one, two or three Lives or for thirty one yeares or under, or for some terme of yeares determinable upon one, two or three Lives and not above; And if such Leases or Grants be made in Reversion or expectancy that then the same together with the Estates in possession doe not exceede three Lives or the terme of Thirty one yeares and not in any wise dispunishable of Waste and soe as upon every such Lease shall be reserved the auntient or most usuall Rent or more, or such Rent as hath beene reserved, yeilded or payd for the same Lands for the greater part of Twenty yeares next before the yeare of Our Lord one thousand six hundred and sixtie and shall be reserved due & payable to him or her that shall have the Inheritance or other Estate of the said Dutchy; And where, noe such Rent hath beene reserved or payable that then upon every such Lease there shall be reserved a reasonable Rent not being under the twentyeth part of the cleare yearely value of the Parks, Lands, Tenements or Hereditaments contained in such Lease, and all Leases and Grants otherwise made or to be made shall be null and void.interlined on the Roll.