Rights of the class represented by the ancient warranty, and now by the usual covenants for title, are pure matters of contract, and from a very early date down to comparatively modern times lawyers have been perplexed with the question how- an assignee could sue upon a contract to which he was not a party. West, Symboleog. I. sect. 35. Wingate’s Maxims, 44, pi. 20, 55, pi. 10. Co. Lit. 117 a. Finch's case, 4 Inst. 85. But an heir could sue upon a warranty to his ancestor, because for that purpose he was eadem persona cúm antecessora. See Y. B. 20 & 21 Ed. I. 232 (Rolls ed.) ; Overton v. Sydall, Poph. 120, 121; Oates v. Frith, Hob. 130; Bain v. Cooper, 1 Dowl. Pr. Cas. (N. S.) 11, 14. And this conception was gradually extended, in a qualified way, to assigns, where they were mentioned in the deed. Bract, fol. 17 b, 67 a, 380 b, 381. Fleta, III. e. 14, § 6. 1 Britton, (Nich. ed.) 255, 256. Y. B. 20 Ed. I. 232-234 (Rolls ed.). Fitz. Abr. Covenant, pi. 28. Vin. Abr. Voucher, N, p. 59. Y. B. 14 Hen. IV. 56 ; 20 Hen. VI. 34 b. Old Natura Brevium, Covenant, 67, B, C, in Rastell’s Law Tracts, ed. 1534. Doct. & Stud. Dial. 1, c. 8. F. N. B. 145, C. Co. Lit. 384 b Com. Dig. Covenant, B, 3. Middlemore v. Goodale, Cro. Car. 503; S. C. lb. 505; W. Jones, 406. Philpot v. Hoare, 2 Atk. 219.
But in order that an assignee should be so far identified in law with the original covenantee, he must have the same estate, that is, the same status or inheritance, and thus the same persona, quoad the contract. The privity of estate which is thus required is privity of estate with the original covenantee, not with the original covenantor; and this is the only privity of which there is anything said in the ancient books. See, further, Y. B. 21 & 22 Ed. 1.148 (Rolls ed.); 14 Hen. VIII. 4, pi. 5. Of course, we are not now speaking of cases of landlord and tenant, and it will be seen that the doctrine has no necessary connection with tenure. F. N. B. 134, E. We may add, that the burden of an ordinary warranty in fee did not fall upon assigns, although it might upon an heir, as representing the person of his ancestor. Y. B. 32 & 33 Ed. I. 516 (Rolls ed.).
On the other hand, if the rights in question were of the class to which commons belonged, and of which easements are the most conspicuous type, these rights, whether created by prescription, grant, or covenant, when once acquired, were attached