I am actively researching the Pifers of Moultrie County.Regarding this family, I have the following:
Willis Lee Pifer, born 29 August 1864, in Sullivan, Moultrie Co., IL, to Samuel Pifer and Sarah Marie Miller.
I have that he married Charlotte Annice Walton, March 25, 1890, in Coles Co., IL.(Date comes from Willis Pifer's obituary).
I have eight children to this family, all born in Moultrie Co., to the best of my knowledge:
-Earl Cleveland Pifer, b. 16 Dec. 1891 -Katheryn Marie Pifer, b. 9 Nov. 1894 -Thomas Leandrue Pifer, b. 1 Aug. 1896 -Paul Peter Pifer, b. 26 Feb. 1898 -Charles D. Pifer, b. 23 Feb. 1900 -Claude F. Pifer, b. 6 Jul. 1903 -George Mack Pifer, b. 23 Jul. 1906 -Grace Elizabeth Pifer, b. 31 May 1908.
One more thing I know about Willis Lee Pifer:some records also show him with the middle name Andrew, as in Willis Lee Andrew Pifer.
As you said, he moved to Elkhart, Indiana, in 1918, so I have lost track of his family for the most part after that.I would be thrilled to hear any more about any of these people.