Census data on our house & owners/renters

I looked in Ancestry.com, which we have at work (on campus access only), and found lots of nice info from the 1930 census.

In 1930, 880 Hill Street was occupied by:
-Hoyt N. Chick, aged 26, a renter paying $30 for the house (presumably a month?), who worked as an agent at an insurance company.
-Mozelle Chick, aged 26, who worked as a stenographer at UGA. Hoyt and Mozelle were married at age 21, and were both GA-born to GA-born parents. Neither graduated from high school (I think - the form is very blurry) but both can read and write.
-Hoyt N. Chick, Jr., aged 5 1/2.
-Daisy Wade, a domestic servant aged 22, who is also white, of GA birth and parentage, and can read and write.

Death certificates for Hoyt and Mozelle were in Ancestry.com as well. He died in Clarke County aged 65, Dec. 14, 1966. She lived until 28 August, 1994, and died in Clarke County (though no longer residing there) at age 93.

Edward J. O'Kelley, the builder and owner of the house, lived in Athens in the 1930 census as well, at 323 Finley Street (house I found the sewer hookup for the other day!). He was the owner, and the house was valued at $2500. He was 54 in 1930, and his wife Ettie M. was 49; they married at 26 and 21 respectively. Both attended school and can read and write, and both were GA-born to GA-born parents. He was occupied as a merchant with his own store, and she was not employed.

Edward J. O'Kelley (35) and his wife May I. (29) also appear in the 1910 census, living in Pitman, Madison County. He is occupied as a merchant then. I didn't find them in the 1920 census, but they lived in Athens by then I am pretty sure (sewer hookups for 2 properties in 1913 and 1915). The ages matching suggests that Edward J.'s wife was known as both Ettie and Mae, which would mean that despite changing names in official records, there was no divorce.

Edward J. O'Kelley died in Clarke County aged 82 on May 5, 1958. I couldn't find a death certificate for Mae/Ettie.