Entails had been established by the Statute of Westminster 1285. The statute included a clause known by the title De donis conditionalibus ("concerning conditional gifts"), which enacted that in grants of land to a man and the heirs of his body, the will of the donor as expressed in the grant should be strictly followed. Prior to this time, judges had held that if an estate was granted to a man and the heirs of his body, and heirs were subsequently born, he had title to the land in fee simple and could do as he wished with it, including selling it, even if this was contrary to the original donor's intent. The effect of De donis, however, meant that if an estate was granted to a man and the heirs of his body, he could not dispose of it any other way; it had to pass to his heirs. Furthermore, if the heirs died out, the donor could claim the land back: this right was known as the "reversion". Such an estate was said to be in "fee tail", derived from the French tailler, to cut, as the inheritance was cut down and confined to the heirs of the body.
While the statute had originally been intended to strengthen the feudal system by preventing land passing out of a family's ownership, in the following centuries, landowners became increasingly frustrated with the restrictions imposed by entails. The common recovery, the outline of which had probably been established in the mid fourteenth century, was developed to circumvent these restrictions. Its underlying principle was that an entail could be broken if the issue (i.e. the persons who would otherwise have received the land under the entail) were compensated.[4] The compensation was, however, a fictitious one, created only for the purpose of breaking the entail.The process worked as follows:
The owner (in tail) of the land, A, wished to convert it from fee tail to fee simple. Accordingly, he conveyed it to someone else B (known as the tenant in praecipe, usually a lawyer acting for the owner) to the intent that a third person C (known as the demandant, and usually an estate trustee or the purchaser, if the land was being sold) might sue for it. C accordingly issued a writ against B, saying he had been unjustly dispossessed of the land by a (fictitious) individual usually named as "Hugh Hunt".
In court, B defended his right saying (correctly) that he had acquired it from A. A (now called the vouchee) was called upon to vouch for his right to the land. He alleged that he had acquired it from D (a person known as the common vouchee, and whose part was usually played by the court crier). D asked for time and failed to appear subsequently; alternatively, he dashed out of the court. In either case, the judgment was that C should recover the land, and that D should compensate B with land of equal value. However, D was chosen because he was a man of straw with no property at all, so that the judgment against him was valueless, and it was never enforced. The result was thus that C recovered the land in fee simple, which A had owned in only fee tail. Being held in fee simple, the land could now be freely sold or transferred or a new settlement made, thus defeating De donis conditionalibus.
The exact principle by which the entail was barred was merely inferred from the judges' reasoning in Taltarum's Case, rather than being an explicit part of their judgment. The four judges had been considering what effect a recovery would have when multiple entails existed: would it bar all entails, or only that of which the defendant was seised at the time?[5] The conclusion they drew was that it would only bar the entail under which the defendant was then in possession.[5] Based on this reasoning, lawyers had developed the device of the "double voucher": if the owner in tail conveyed the land to someone else, the "tenant in praecipe", at the start of the procedure, and the demandant then sued the tenant in praecipe rather than simply suing the owner directly, the recovery would not only bar the land passing to the owner's heirs, it would also extinguish any other entails, in addition to the claim of the original donor in the event the heirs died out. Solomon Atkinson, in The Theory and Practice of Conveyancing (1839), stated the facts (as then understood) thus:
in the reign of Ed. 4 [...] the judges [...] determined, that even a nominal and fictitious recompense, descending to the issue in tail, should be an effectual bar, not only to the issue in tail, but also to the persons entitled in remainder and reversion. This, though not expressly so decided, is the inference drawn from the determination of the judges in the celebrated case 12 Ed. 4, known as Taltarum's case.[6]