quality:corruption, structural:scholar_edition
Europe

From the early Christian era (30 to 325 CE), marriage was thought of as primarily a private matter, with no uniform religious or other ceremony being required. However, bishop Ignatius of Antioch writing around 110 to bishop Polycarp of Smyrna exhorts, "t becomes both men and women who marry, to form their union with the approval of the bishop, that their marriage may be according to God, and not after their own lust."

In 12th-century Europe, women took the surname of their husbands and starting in the second half of the 16th century parental consent along with the church's consent was required for marriage.

With few local exceptions, until 1545, Christian marriages in Europe were by mutual consent, declaration of intention to marry and upon the subsequent physical union of the parties. The couple would promise verbally to each other that they would be married to each other; the presence of a priest or witnesses was not required. This promise was known as the "verbum." If freely given and made in the present tense (e.g., "I marry you"), it was unquestionably binding; if made in the future tense ("I will marry you"), it would constitute a betrothal.

In 1552, a wedding took place in Zufia, Navarre, between Diego de Zufia and Mari-Miguel following the custom as it was in the realm since the Middle Ages, but the man denounced the marriage on the grounds that its validity was conditioned to "riding" her (" si te cabalgo, lo cual dixo de bascuence (...) balvin yo baneça aren senar içateko "). The tribunal of the kingdom rejected the husband's claim, validating the wedding, but the husband appealed to the tribunal in Zaragoza, and this institution annulled the marriage. According to the Charter of Navarre, the basic union consisted of a civil marriage with no priest required and at least two witnesses, and the contract could be broken using the same formula. The Church in turn lashed out at those who got married twice or thrice in a row while their formers spouses were still alive. In 1563 the Council of Trent, twenty-fourth session, required that a valid marriage must be performed by a priest before two witnesses.

One of the functions of churches from the Middle Ages was to register marriages, which was not obligatory. There was no state involvement in marriage and personal status, with these issues being adjudicated in ecclesiastical courts. During the Middle Ages marriages were arranged, sometimes as early as birth, and these early pledges to marry were often used to ensure treaties between different royal families, nobles, and heirs of fiefdoms. The church resisted these imposed unions, and increased the number of causes for nullification of these arrangements. As Christianity spread during the Roman period and the Middle Ages, the idea of free choice in selecting marriage partners increased and spread with it.

In medieval Western Europe, later marriage and higher rates of definitive celibacy (the so-called "European marriage pattern") helped to constrain patriarchy at its most extreme level. For example, Medieval England saw marriage age as variable depending on economic circumstances, with couples delaying marriage until the early twenties when times were bad and falling to the late teens after the Black Death, when there were labor shortages; by appearances, marriage of adolescents was not the norm in England. Where the strong influence of classical Celtic and Germanic cultures (which were not rigidly patriarchal) helped to offset the Judaeo-Roman patriarchal influence, in Eastern Europe the tradition of early and universal marriage (often in early adolescence), as well as traditional Slavic patrilocal custom, led to a greatly inferior status of women at all levels of society.

The average age of marriage for most of Northwestern Europe from 1500 to 1800 was around 25 years of age; as the Church dictated that both parties had to be at least 21 years of age to marry without the consent of their parents, the bride and groom were roughly the same age, with most brides in their early twenties and most grooms two or three years older, and a substantial number of women married for the first time in their thirties and forties, particularly in urban areas, with the average age at first marriage rising and falling as circumstances dictated. In better times, more people could afford to marry earlier and thus fertility rose and conversely marriages were delayed or forgone when times were bad, thus restricting family size; after the Black Death, the greater availability of profitable jobs allowed more people to marry young and have more children, but the stabilization of the population in the 16th century meant fewer job opportunities and thus more people delaying marriages.

The age of marriage was not absolute, however, as child marriages occurred throughout the Middle Ages and later, with just some of them including:

As part of the Protestant Reformation, the role of recording marriages and setting the rules for marriage passed to the state, reflecting Martin Luther 's view that marriage was a "worldly thing". By the 17th century, many of the Protestant European countries had a state involvement in marriage.

In England, under the Anglican Church, marriage by consent and cohabitation was valid until the passage of Lord Hardwicke's Act in 1753. This act instituted certain requirements for marriage, including the performance of a religious ceremony observed by witnesses.

As part of the Counter-Reformation, in 1563 the Council of Trent decreed that a Roman Catholic marriage would be recognized only if the marriage ceremony was officiated by a priest with two witnesses. The council also authorized a Catechism, issued in 1566, which defined marriage as "The conjugal union of man and woman, contracted between two qualified persons, which obliges them to live together throughout life."

In the early modern period, John Calvin and his Protestant colleagues reformulated Christian marriage by enacting the Marriage Ordinance of Geneva, which imposed "The dual requirements of state registration and church consecration to constitute marriage" for recognition.

In England and Wales, Lord Hardwicke's Marriage Act 1753 required a formal ceremony of marriage, thereby curtailing the practice of Fleet Marriage, an irregular or a clandestine marriage. These were clandestine or irregular marriages performed at Fleet Prison, and at hundreds of other places. From the 1690s until the Marriage Act of 1753 as many as 300,000 clandestine marriages were performed at Fleet Prison alone. The Act required a marriage ceremony to be officiated by an Anglican priest in the Anglican Church with two witnesses and registration. The Act did not apply to Jewish marriages or those of Quakers, whose marriages continued to be governed by their own customs.

In England and Wales, since 1837, civil marriages have been recognized as a legal alternative to church marriages under the Marriage Act 1836. In Germany, civil marriages were recognized in 1875. This law permitted a declaration of the marriage before an official clerk of the civil administration, when both spouses affirm their will to marry, to constitute a legally recognized valid and effective marriage, and allowed an optional private clerical marriage ceremony.

In contemporary English common law, a marriage is a voluntary contract by a man and a woman, in which by agreement they choose to become husband and wife. Edvard Westermarck proposed that "the institution of marriage has probably developed out of a primeval habit".

Since the late twentieth century, major social changes in Western countries have led to changes in the demographics of marriage, with the age of first marriage increasing, fewer people marrying, and more couples choosing to cohabit rather than marry. For example, the number of marriages in Europe decreased by 30% from 1975 to 2005. As of 2000, the average marriage age range was 25–44 years for men and 22–39 years for women.