Your Harvey Willis Weedman is found on the 1930 Census - Illinois - Macoupin County - Virdis - District 71 - Page 260 (Sheet 7A) at line 34. Sarah Ann is at line 35. They are the father-and-mother-in-law of the head of household, Harry Hammond. Harry's wife Della was 31 years old. The Hammond children and "step children" are listed with them. There are some other Weedmans in the same enumeration district, who might be additional children of Harvey and Sarah. One is William Weedman; another is Robert Weedman; there's also a Peter Weedman and a Joseph Weedman. They're all adults.