[1] His father was Yousef Moyal whose family were wealthy Jews from Morocco who settled in Palestine.

[1][2] Shimon's brother, David Moyal (1880–1953), was a lawyer and activist.

[4] He and his wife, Esther Moyal, returned to Palestine in late 1908[3][5] shortly after the Young Turk revolution in the Ottoman Empire.

[3][6] Moyals and Malul also founded an association, Ha-Magen (Hebrew: The Shield), which aimed to answer to any hostile article against Zionism published in the Arabic publications.

[3] Moyal married a Beirut-born Jewish journalist Esther Al Azhari in 1894.