Three Irish executives of one of New York’s biggest construction firms have been convicted of embezzling from union benefits funds. In a federal court in Brooklyn on Friday a jury returned guilty verdicts against Donal O’Sullivan, the founder, owner and President of Navillus, as well as Helen O’Sullivan, his sister and a payroll administrator in the company, and Padraig Naughton, the firm’s financial controller. All three were found guilty on all 11 counts charging wire fraud, mail fraud, embezzlement from employee benefits funds, submission of false remittance reports to union benefits funds, and conspiracy to commit those crimes. The verdicts…