Yom Tov of Joigny

Yom Tov (alt. Yom Tob) of Joigny, also denoted of York (died 1190) was a French-born rabbi and liturgical poet of the medieval era who lived in York, and died in the massacre of the Jews of York in 1190. A Hebrew language hymn attributed to him,^[1] transliterated "Omnam Kayn" or "Omnam Ken" (Heb: "indeed thus") is still recited in Eastern Ashkenazi synagogues each year on the evening of Yom Kippur, the Day of Atonement. He was a student of Rabbeinu Tam.^[2]