King Philip Augustus of France was married to his second wife, Ingeborg of Denmark, in 1193. Sadly, Augustus found Ingeborg to be absolutely revolting and filed for a divorce on the grounds that the marriage was not yet consummated. His wife, however, argued that they had consummated the marriage. As a result, Pope Celestine III refused to grant the king a divorce.
Philip was not easily defeated. He ignored the decision and went on to marry Agnes of Marania.

The pope ordered him to return to Ineborg and to make his point, he imposed an interdict on December 12, 1199. During this time, all churches were closed and the pope determined that as long as the king wasn’t sleeping with his wife, his subjects were not allowed to sleep with theirs. As a result, all children born in this period were deemed illegitimate. The interdict continued until September 7, 1200 –resulting in nine months of bastards born in France. Augustus eventually did return to Ineborg, but not until 1213.


source: http://www.neatorama.com