In 1873, Roald Dahl's father, Harald Dahl, was born.
Harald Dahl was Norwegian.
Harald Dahl's father had a shop in Sarpsborg, Norway.
They decided to go away to one of the big countries, England or France, because they thought that a small town like Sarpsborg was not a place where people could make a fortune.
Uncle Oscar stayed in France.
Harald Dahl (Roald Dahl's father) moved to South Wales.
Roald Dahl was born in Wales.