The common law marriage in Australian private international law

The common law marriage is a curiosity in the private international law of marriage in the Commonwealth and Ireland. In some cases, a marriage that is invalid under the law of the place where it was solemnised (lex loci celebrationis) may nevertheless be recognised as valid if it meets the requirements of a common law marriage. These originate in the English canon law as it stood in the eighteenth century and include the central requirement of the parties' present declaration that they are married. The parties also had to meet the essentials of a Christian marriage as described in Hyde v Hyde (1866): "a voluntary union for life of one man and one woman to the exclusion of all others". There are more reported cases on common law marriages in private international law in Australia than any other country. Although its Australian development coincided with that of other countries, in the twenty-first century the Australian common law marriage is now in an unusually amorphous condition. The preconditions for a court to ignore the lex loci have been significantly liberalised. Additional uncertainty in the nature of a common law marriage is created by a combination of repeated misinterpretations of the Marriage Act, the failure to use precedent outlining its requirements and the dismantling of the Hyde definition of marriage in the Same-Sex Marriage Case (2013). The article considers that the common law marriage might still serve a useful purpose in Australian private international law, and how it could better do so.