This looks like your family.The census date was 1 Apr 1930.
1930 Census Ohio, Ottawa County, Allen, ED 1, Page 1A
Dwelling 13/Family 13
Rents farm for $10
Earl Swisher, head, white, 44, married, age 20 at first marriage, cannot read or write, he and parents b Illinois, blacksmith at machine shop
Ethel, wife, white, 42, married, age 19 at first marriage, reads, writes, she and parents b Ill
Earl Jr., son, white, 16, attends school, b Illinois
Forst?, son, white, 14, attends school, b Ohio
Stanley, son, white, 12, attends school, b Ohio
Mary Bell, daughter, white, 7, b Illinois
Carrol, son, white, 5 yrs 1 month, b Illinois
Marion, daughter, white, 3 yrs 1 months, b Illinois
I hope this helps you find Carrol.