Rabbi Hoshaya said: Rabbi Hoshaya, a colleague of the inhabitants of Vienna, and Rabbi Shmuel, son of Rabbi Yitzchak, were appointed for the sanctification of the month. They knew whether they would ascend from their count. It is obvious that they did not ascend because he was a groom, as stated in Jerusalem Talmud, Sanhedrin, Chapter 1, Halacha 2.
Seder_HaDorot,_Tanaim_and_Amoraim.279:1