54 AD - Nero becomes Emperor of Rome. Nero married two men in legal ceremonies, with at least one spouse accorded the same honours as an empress. Gay relationships are accepted and institutionalized in this time period.
1102 AD – The Council of London took measures to ensure that the public, quite tolerant of homosexuality at the time, knew that it was sinful, marking a significant shift in church attitudes towards homosexuality, which previously had been more or less indifference, or very mild condemnation. Many priests were homosexuals, likely one of the causes of the change in attitude, as moral reformers such as Bernard of Cluny called for change.