From Wikipedia: https://en.wikipedia.org/wiki/Meir_Simcha_of_Dvinsk
Meir Simcha of Dvinsk (also known as Meir Simcha Ha-Kohen, 1843 – 14 August 1926) was an Orthodox rabbi in the Russian Empire and Latvia. A leader of the Jewish community in Daugavpils, he is known for his writings on Maimonides’ Mishneh Torah, which he titled Ohr Somayach, as well as his novellae on the Torah, titled Meshech Chochma.
