Wikipedia
A proxy wedding or (proxy marriage) is a wedding in which one or both of the individuals being united are not physically present, usually being represented instead by other persons. If both partners are absent a double proxy wedding occurs.
Marriage by proxy is usually resorted to either when a couple wish to marry but one or both partners cannot attend for reasons such as military service, imprisonment, or travel restrictions; or when a couple lives in a jurisdiction in which they cannot legally marry.
Proxy weddings are not recognized as legally binding in most jurisdictions: both parties must be present. A proxy marriage contracted elsewhere may be recognised where proxy marriage within the jurisdiction is not; for example, Israel recognises proxy marriages abroad between Israelis who might not have been permitted to marry in Israel. Under the English common law, if a proxy marriage is valid by the law of the place where the marriage was celebrated (the lex loci celebrationis) then it will be recognised in England.
Usage examples of "proxy marriage".
Lord Cantonshire looked meaningfully at his daughter, whose face was suddenly ashen at the news of the proxy marriage.
He didn't suggest I renounce the proxy marriage when the time was up, or anything.