Looks to me that you have the wrong parents for this Lee George 1900 Iowa, but maybe there were two? Anyway, this Lee's parents were William George & Marthy Nixon.
Iowa State Census Collection, 1830-1925
Name: Lee George Census Date: Jen 1, 1925 Residence County: Crawford Residebce State: Iowa Location: Denison Birth Location: Iowa Marital Status: Married Gender: Male Birth Year: abt 1900 Race: white Relation to head: Head Mother: Marthy Nixon Mother's Birth Year: abt 1864 Mother's Birthplace: Iowa Father: William George Father's Birthplace: Iowa Marriage Place: Iowa Spouse Name: Bernice George Line: 6 Roll: IA_123
Lee George, head, 25, 1900 Iowa Bernice George, wife, 24, 1901 Lean George, 4 Ester George 2
In 1920 which you read, mother was (W H), Mrs. William H. George, mother, b: 1864 Iowa, widowed