 Rabbi Gurwicz married the daughter of his uncle, Rabbi Leib Lopian, and his wife, Tzipa.He is a brother-in-law (through his sister Sarah) to Rabbi Zvi Kushelevsky, head of the Heichal Hatorah beTzion yeshiva in Jerusalem.Among his sons-in-law is Rabbi Nissan Kaplan, a former "maggid shiur" in the Mir yeshiva in Jerusalem.