Edith Manning S Family

1900 census Kansas Butler County
Manning, Margaret head fw Sept 1842 57 wd 26 8,8 NY Eng Scottland farmer
, Willis son mw Oct 1879 20 s KS MO NY
farm laborer
, Harry B. son mw May 1882 18 s KS MO NY
, Easter dau fw Sept 1884 15 s KS MO NY
, Mamie dau fw March 1886 14 s KS MO NY
, Edith dau fw Nov 1888 11 s KS MO NY
The birth year and month match, but there is no listing in this for William Manning. Did he die between 1888 and 1900?