Your Jacob Egli was my g'grandfather. Here's what I have: b. May 1834 in Switzerland, m. Katherine Borer May 24 1869 in Iowa, d. Sep 1, 1903 also in Iowa. The "buggy accident" is news to me.
Jacob and Katherine apparently had six children: Susan, b. 1872; Fred, b. 1877; Frank (your ancestor?) 1881 - 1971; Jacob Jr., 1884 - 1930; Jeida, b. 1886, and Anna (my grandmother), b. 1890, d. 1970s (don't recall exact date).
Anna Egli m. John Frank Blaylock in 1914, had two children: Betty, 1917-2008, and John Robert (Maj. USAAF) 1919-1943 (my father).
Hope this information is useful. May be that your information is more useful to me! Thanks....