Sean Quinn junior and his wife Karen are embroiled in a legal action in relation to QuinnBet, the profitable online betting business established by the family of the former billionaire industrialist Sean Quinn. Quinn and his wife were previously directors of a company called Secoth Investments, which holds shares in QuinnB Sports on behalf of members of the Quinn family. They resigned from their directorships last November.  Now, Secoth has launched a High Court action against Quinn junior and his wife. The case was taken last week, with Secoth represented by the law firm McDermott, Creed & Martyn. The sole…