Saiyang inagom si Regina Hoffman (d. 1851) kan 1849 na nagtao saiya nin duwang aki, Regina (1849–1870) asin Frigyes (1850-1910). Si Feszl nag'agom liwat pakagadan kan enot niyang agom. Kan 1858 saiyang naagom si Vilma Quandt (1827–1902).