Here is what you must do -
obtain a death certificate for Edward Landis. It should list parents names, other vital info including name of informant. Informant's name may be a relative or personal friend or hospital staff member..
Who is your mother ???
Since he was born in 1888 the next available census is 1900. The 1890 census burned in 1921. Not much was saved. In 1900 he should be 11 or 12 and living with his parents. If your library has the "soundex files for 1900" you should be able to find him in 1900. Soundex files are arranged by head of household; so search for his father.