I don't think that Franklin is a Swedish name. He was probably Frans.
The only Floby parish I know about was in Skaraborg county, not in the city of Göteborg or in the county of Göteborg och Bohus.
The Emibas CD lists a Frans Albert Gustavsson Blix born 1 May but the year is different. You said yours was born in 1869 and this one was born in 1868. He was born in Floby, Skaraborg county.
Gustavsson Blix, Frans Albert Dräng = farmhand (unmarried man)
b. 5/1/1868 in Floby, Skaraborgs län (Västergötland)
Emigrated 4/7/1888 from Keddabo, Floby, Skaraborgs län (Västergötland) to Amerika
Source: SVAR; Household Examination Roll, vol. Floby AI:8, p. 118
Emibas migration file ID: Floby R 1888 007
First name: FRANS ALBERT Last name: BLIXT Age: 20Gender: M Parish: FLOBYCounty: R (Skaraborg) Port: GÖTEBORG Date: 1888 04 20 Destination: NEW YORK Fellows: NEJ Source: 35:116:993
I couldn't find him in the 1880 Swedish Census CD with that information. I looked at the household examination record for Floby 1870-1890, and that said that his birth place was in St Hellest. (Stora Hellestad?)