Inscription:
Hebrew Name: Mordechai, son of Yaakov Segal (Segal, is another way to indicate someone was a Levite. Sometimes, in some form, it is written as a family name, such as SIEGEL, but I cannot make that assumption here.) He died in the month of Tishre,5618, so as a starting date, 1st of Tishrei, 5618 = Sat, 19 September 1857.