It's been more than three decades since Paul Barwick and John Singer walked into the King County auditor's office and, amid the glare of news cameras, requested — and were refused — a marriage license. In the annals of the gay-rights movement, the men were revolutionaries: Thirty-four years ago this month, they became the first gay couple in the state, and the second in the country, to sue over the right to marry. A King County Superior Court judge and later the state Court of Appeals rejected their claim that state law denying them the right to marry was unconstitutional....