Русско-англо-русский юридический словарь

The 1836 Act again provided that a marriage would be null and void only (my emphasis) if the parties knowingly and wilfully married in breach of certain requirements of the Act including by marrying in any place other than the church or registered building or other place specified in the notice and certificate; or without due notice to the registrar; or without a duly issued certificate or licence; or in the absence of the registrar where the presence of the registrar was required. (http://www.familylawweek.co.uk)

Knowingly false testimony may expose a witness to a charge of perjury or obstruction of justice. (Grand Jury Practice by Howard W. Goldstein, Steven M. Witzel)

In light of the growing prevalence of intentionally fake stories, it may be prudent for firms to have proactive policies in place that not only explicitly prohibit the dissemination of knowingly false information, but that also require some form of verification before sharing certain market-related news with clients and prospective clients. (Lexology)

The court ruled that Luzgin posted an article with knowingly false information about a joint invasion of Poland by German and Soviet forces on 1 September 1939. (BBC News)