Wedding banquets in Scotland, to which a number of persons were invited, each of whom paid a small sum of money not exceeding a shilling. After defraying the expenses of the feast, the residue went to the newly-married pair, to aid in furnishing their house. Abolished in 1645.
“Vera true, vera true. We'll have a' to pay ... a sort of
penny-wedding it will prove, where all men contribute to the young
folks' maintenance.” —
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894