Disciple of the Baal Shem Tov (~1699–1799)
Rabbi David Leykes () (1698/1699 – 10 April 1799) was a Hasidic Av Beit Din in the city of Bar and one of the disciples of Baal Shem Tov.
Biography.
Leykes was the son of Israel and his wife Leah. His father was a descendant of Judah Loew ben Bezalel. He married twice. The second time was to a woman named Chaya Shintzy when he was over 70 years old. From his second marriage, he had 2 sons and a daughter name Feiga, who, in a second marriage, married Rabbi Mordechai Twersky of Chernobyl.
He was well-liked by the Baal Shem Tov and brought joy to his circle. The Besht appointed him as a conductor for his congregation. He was said to always be in joy. When his first wife and children died, he rebuked those who attempted to comfort him and still displayed exuberance. He briefly cried when the Besht died, before returning to his joyful disposition.
He served as a judge in the court of Bar under the rule of Jacob Samson of Shepetovka. Following Yaakov's departure, Leykes was appointed as the Av Beit Din.
Leykes was known to have given the only Haskamah in the Agaret HaKodesh (1793/1794) of Rabbi Menachem Mendel of Vitebsk. Works of his are also featured in the היחס מטשרנוביל ורוז'ין (Connection of Chernobyl and Ruzhyn) and the תיקוני הזבח (Corrections of the Sacrifice) (Odessa 1882).
He died on 10 April 1799 (5 Nissan 5559) at the age of 100. The cemetery where he was buried was destroyed by the Soviet government and was located by Hasid Israel Meir Gabbay who attempted to erect a monument there, but was denied permission by local authority. today, a sign posted on one of the buildings indicates the burial place of the rabbi. According to his tombstone, he promised his descendants that if they visited and prayed at his grave on the Rosh Chodesh of Elul, they would be guaranteed salvation.
Family.
The Rabbi's sons are 
His grandchildren: Rabbi David of Tolner, as well as his great-grandchildren Rabbi David of Saltipoli, Rabbi David of Squire, and Rabbi David of Makarov were named after him.