Lewis married Helen Mary Stowell on 12 Mar 1857 in Antwerp, Jefferson, New York, USA. Helen (daughter of Lorenzo Stowell and Caroline Seymour) was born on 14 Oct 1835 in Somerville, Saint Lawrence, New York, USA; died on 19 Apr 1908 in Libertyville, Lake, Illinois, USA; was buried in Lakeside Cemetery, Libertyville, Lake, Illinois, USA. [Group Sheet] [Family Chart]

1. Pitt Seymour Penniman was born on 10 Apr 1858 in Libertyville, Lake, Illinois, USA; died on 23 Oct 1859 in Libertyville, Lake, Illinois, USA; was buried in Lakeside Cemetery, Libertyville, Lake, Illinois, USA.
2. Margaret Caroline Penniman was born on 12 Feb 1860 in Libertyville, Lake, Illinois, USA; died on 10 Jan 1926 in Waukegan, Lake, Illinois, USA; was buried in Lakeside Cemetery, Libertyville, Lake, Illinois, USA.
3. Harriet Louise Penniman was born on 21 Apr 1865 in Libertyville,Lake,Illinois, USA; died on 10 Dec 1891 in Antwerp, Jefferson, New York, USA.
4. Laura May Penniman was born on 6 Jan 1871 in Libertyville,Lake,Illinois, USA.