Complex sentence: Following his marriage, he continued serving in the capacity of rosh yeshiva in America until 1952, when he and his family immigrated to Israel and he established Yeshivas Beis Yehuda in Tel Aviv.
Split into simpler sentences: Following his marriage, he continued serving in the capacity of rosh yeshiva in America until 1952. In 1952 he immigrated to Israel once again, establishing Yeshivas Beis Yehuda in Tel Aviv.