A defamation case between Martin Lanigan, Sinn Féin president Mary Lou McDonald’s husband, and former TD Shane Ross was settled on Wednesday. Mr Lanigan has been married to the Sinn Féin leader since 1996, with the couple having met in 1990. Martin Lanigan, husband of Sinn Féin leader Mary Lou McDonald, who settled a legal action against author Shane Ross and publisher Atlantic Books. Atlantic Books were the publishers of the book, Mary Lou McDonald: A Republican Riddle. Shane Ross leaving court, where Martin Lanigan, husband of Sinn Féin leader Mary Lou McDonald, settled a legal action against him.