Juan married Valentina Zavala Ciarda on 19 Jul 1856 in Ispaster, Bizkaia. Valentina (daughter of Martin Zavala Longa and Dominga Ziarda Echevarrieta) was born about 1830 in Ispaster, Bizkaia; died on 6 Jan 1884 in Ispaster, Bizkaia. [Group Sheet] [Family Chart]

1. Juan Martin Mendiola Zabala was born on 18 May 1857 in Bedarona, Bizkaia.
2. Maria Ysabel Faustina Mendiola Zabala was born on 15 Feb 1859 in Bedarona, Bizkaia.
3. Antonio Francisco Mendiola Zabala was born on 20 Mar 1861 in Bedarona, Bizkaia.
4. Pedro Juan Mendiola Zabala was born on 23 Oct 1863 in Bedarona, Bizkaia.
5. Maria Mendiola Zabala was born on 10 Jun 1866 in Bedarona, Bizkaia.