A powerful instrument was thus provided for the development and enforcement of a complete system of divorce jurisprudence. Little by little the canonists, in tedious succession from Hincmar of Rheims to the decretalist Tancred,[139] brought order out of confusion and agreement out of contradiction. Through special pleading and violent assumption, unscrupulous twisting and suppressing of texts, earnest argument and childish allegory, the law of divorce was gradually brought into some degree of harmony with the sacramental theory of marriage.[140] The middle of the tenth century saw the task virtually accomplished at the hands of Gratian and Peter Lombard,[141] the master-builders of the canon law;[142] although their teachings are still "on the surface obscured by reminiscences" of earlier theories, and after them the Decretals show certain aberrations from the strict doctrine, like "sporadic cases after a great epidemic."[143]

Theoretically, as commonly stated, divorce proper is entirely eliminated from the mature law of the western church; but inconsistently the name "divorce" is retained as a rubric in the collections of canons; and it is used in two senses, neither of which corresponds with its ancient and proper meaning as a complete dissolution of the bond of true wedlock. First, the term divortium a vinculo matrimonii is commonly employed to designate, not the dissolution of a lawful union, but the judicial declaration of nullity of a spurious marriage which on account of some impediment is void, or at least voidable, from the beginning. Secondly, the term divortium a mensa et thoro means a judicial separation of husband and wife which does not touch the marriage tie. In each case, therefore, the use of the word "divorce" is loose and very misleading.[144]

As finally settled, the canon law permits a separation from bed and board on three grounds. First is adultery. For this offense the woman as well as the man is given an action for divorce, which, however, may be defeated by pleading various exceptions, such as the like guilt of the accusing party.[145] The second cause is "spiritual adultery,"[146] being historically an enlargement of the first cause through allegorical interpretation. Originally under this head separation was allowed for various offenses;[147] but in the end it is restricted to the heresy or apostasy of one of the persons, and perhaps to the case of one spouse compelling the other to commit a wrong,[148] although on this point the authorities are by no means agreed. A third cause for which separation may be demanded is cruelty committed by one partner against the other. Whether in this case blows alone will suffice, especially as concerns the woman, is not settled by the laws; but the "dominant opinion inclines to leave the determination of this point to the discretion of the judge."[149]

It thus appears that theological subtlety, partly under stress of the needs of actual life, has found a way to pass far beyond the limits which any reasonable interpretation of the scriptural precepts will permit. In dealing with the question of divorce a vinculo an inconsistency even greater is shown, and the results are far more disastrous; for the door is thereby opened for manifold hardships and corruption. In the first place, two exceptions to the rule that a genuine marriage cannot be dissolved are sanctioned by the law and practice of the Church. The privilegium Paulinum is thus freely admitted.[150] If the Christian convert is abandoned by his infidel spouse, he is allowed to contract a new marriage. Only by an ingenious assumption can this liberty be harmonized with the prevailing dogma. The case is no exception, we are told, for it is the infidel, not the believer, who dissolves the marriage; and the rule of the church does not apply when the unbeliever "renounces his right" to maintain that relation, in order to "make use of his own heathen law."[151] In England, where the canon law of divorce was in full force, the casus apostoli had a practical application to the advantage of the faithful in their dealings with the Jews. "In 1234 a Jewish widow was refused her dower on the ground that her husband had been converted and that she had refused to adhere to him and be converted with him. An Essex jury even doubted whether if two Jews married under the 'Lex Judaica' but afterwards turned to the 'Lex Christiana' and then had a son, that son could be legitimate;"[152] but this finding is not in harmony with the teaching of the canon law. Moreover, in modern times, with the spread of Catholic missions into many new lands, this privilege has been of increasing importance.[153]

By the second exception the church found herself entangled in the subtle theory accepted after Peter Lombard that a contract de praesenti constitutes a valid marriage whether followed by actual wedded life or not.[154] The mature doctrine of the canon law, which is still obeyed by the Roman church, permits the unconsummate marriage de praesenti to be dissolved through papal dispensation or ipso facto by taking holy orders.[155] Here in effect the older theory of Gratian, that only the consummate marriage is a real marriage, is adopted for a practical end, although it is absolutely irreconcilable with the still accepted orthodox theory of Lombard, whose enforcement in the ecclesiastical courts has been the cause of so much evil in western Christendom.[156]

Taking the church's own definition of marriage, it seems, after all, that divorce a vinculo did not in reality quite disappear from the canon law. It would be a serious error to imagine that the opportunity for escaping entirely from the bonds of undesirable wedlock was restricted to the contract de praesenti not followed by actual conjugal life, which in direct violation of her own theory the church was constrained to treat as an imperfect marriage. To all intents and purposes, when judged from a rational modern standpoint, the decree of nullity was a divorce proper. Practically speaking, it cannot be doubted that there existed a very wide liberty of divorce in the Middle Ages, though it existed mainly for those who were able to pay the ecclesiastical judge for finding a way through the tortuous maze of forbidden degrees.[157] In a divorce procedure masquerading under the guise of an action for nullifying spurious marriages lurked the germs of perjury and fraud. When both persons were willing to separate, the matter must have been easy enough by collusion; and when one consort was tired of the other, the ecclesiastical court for money would be able to find good reasons for effecting his release.[158] "Spouses who had quarreled began to investigate their pedigrees and were unlucky if they could discover no impedimentum dirimens" or cause which would have prevented the contraction of a valid marriage.[159] "The canons prescribing the prohibited degrees of relationship were marvels of ingenuity. Spiritual relationships, those gained in baptism, were recognized no less than natural relationships, and equally with them served as barriers to legal marriage. Marriage was prohibited within seven[160] degrees of relationship and affinity; and none but the astutest students of the law were able to unravel so complicated a system. The annulling of marriages, which had been contracted within the prohibited degrees, became a flourishing business of the Church. No exercise of its power yielded more money, or caused more scandal. So tangled was the casuistry respecting marriage, at the beginning of the sixteenth century, that it might be said that, for a sufficient consideration, a canonical flaw could be found in almost any marriage."[161]

The marvelous resources of the church in the binding and unbinding of wedlock are strikingly exhibited in the matrimonial adventures of Margaret Tudor, daughter of Henry VII. To enable her to marry King James IV. of Scotland a papal dispensation was requisite, as they were related within the fourth degree. After he was slain at the battle of Flodden (1513), Margaret espoused Archibald Douglas, sixth earl of Angus; and from him in 1527 she obtained by papal authority a divorce "on the desperate plea first brought forward in 1525, that James IV. had lived for three years after Flodden," and so was alive at the time of her second nuptials.[162] Her next experiment in the spiritual courts was less successful. In vain she tried to rid herself of her third consort, Henry Stuart, on the pretext that her previous cohabitation with her husband's fourth cousin, the earl of Angus, had created a bar to their marriage through affinity.[163]

Long before this, in the days of Edward II., a satirist describes the "prodigious traffic" in divorces. Any husband having "selver among the clerkes to send" could rid himself of his wife by "bringing her to the constery" or consistory court, with two false witnesses to support his declarations.[164] A case is mentioned by Coke "in which a marriage was pronounced null because the husband had stood god-father to the cousin of his wife."[165] Before the Reformation the voidance of alleged false wedlock on the ground of pre-contract or forbidden degrees of affinity, spiritual relationship, consanguinity, or on some other canonical pretext, had become an intolerable scandal. "Marriages have been brought into such an uncertainty thereby," complains a statute of Henry VIII., "that no marriage could be so surely knit or bounden but it should lie in either of the parties' power ... to prove a pre-contract, a kindred and alliance, or a carnal knowledge to defeat the same."[166]

Nevertheless, the Council of Trent introduced no essential change in the divorce law of the Catholic church.[167] A vain attempt was made to remedy the evils arising in the confusion of terms.[168] Anathema was pronounced against those who should deny the indissolubility of wedlock as a necessary consequence of its sacramental nature; and a like curse was fulminated against any who shall dare to say that the church errs in allowing divorce quoad torum et cohabitationem, temporarily or perpetually, for any cause besides unfaithfulness.[169] But neither at the council nor since has there ever been made any essential change in the law relating to the papal power of dispensation.[170]

II. THE PROTESTANT DOCTRINE OF DIVORCE