Who is Shmuel Hocohen from The Source; a Novel and what is their importance?

Shmuel Hocohen is a Jewish immigrant. He comes to Palestine from Russia and he wants land. He has been trying to obtain land for a Jewish settlement for over four years, but is unable to do so because of all the bribes. He has attended a Russian school in Vodzh and become interested in socialism. When he returns to his village one evening, he finds his parents and others slaughtered by a peasant uprising. He collects money from fellow Jews to establish a settlement in Tiberias. After four years of trying, Istanbul grants permission through Tabari, and the Russian settlers arrive.