Charles L. Knickerbocker was the son of William R. Knickerbocker and his first wife Catherine Lyon. Charles was born 3 Oct 1861. As recorded in this prior post about William R. Knickerbocker, Charles married Miss Irene Wilkinson, a native of Wisconsin.
Here’s a copy of the 1910 U.S. Federal Census listing Charles, wife Irene and two children Agnes and Willie ( Yes, I know yet another William Knickerbocker!)
Stephen Wainer's Genealogy Weblog 