Domenico Jaconelli lived with his parents, Giovanni and Angela Jaconelli, in Katarina parish in Stockholm, Kvarteret Båtsmannen. Domenico was born in Italy 6 July 1895. The family had arrived to Stockholm from Göteborg in 1909. They were registered in the Roman Catholic congregation of Stockholm.
At the time of the Swedish census 1940, Domenico Jaconelli lived in Matteus parish, Stockholm with his wife Eva Maria, born Larsson, and their children. They had their own business, making icecream.