When Johan Haraldsson was born on 24 December 1719, in Undenäs, Skaraborg, Sweden, his father, Harald Esbjörnsson, was 47 and his mother, Britta Andersdotter, was 47. He married Britta Bengtsdotter on 13 August 1786, in Undenäs, Skaraborg, Sweden. They were the parents of at least 5 sons and 2 daughters. He died on 8 August 1786, in his hometown, at the age of 66, and was buried in Undenäs, Skaraborg, Sweden.