| Children |
| | 1. Juan Francisco Xavier Muguerza Alcain, b. 19 Oct 1841, Mutriku, Gipuzkoa  |
| | 2. Juan Antonio Muguerza Alcain, b. 6 May 1844, Mutriku, Gipuzkoa |
| | 3. Maria Evarista Muguerza Alcain, b. 26 Oct 1846, Mutriku, Gipuzkoa , d. 3 Mar 1854, Mutriku, Gipuzkoa (Age 7 years) |
| | 4. Jose Maria Castor Muguerza Alcain, b. 28 Mar 1849, Mutriku, Gipuzkoa , d. 29 Feb 1862, Mutriku, Gipuzkoa |
| | 5. Juan Lorenzo Muguerza Alcain, b. 17 Jan 1852, Mutriku, Gipuzkoa |
| | 6. Cecilio Venancio Muguerza Alcain, b. 1 Feb 1855, Mutriku, Gipuzkoa |
| | 7. Antonia Maria Benita Muguerza Alcain, b. 12 Jan 1858, Mutriku, Gipuzkoa |
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