Mezue ahịrịokwu na-esonụ: A mụrụ Birger Carlstedt na Helsinki nye onye ọchụnta ego John Wilhelm Carlstedt na onye na-ere nri Amanda Josefina Lindström. Carlstedt nwere nwanne nwoke tọrọ ya nke nwụrụ mgbe ọ bụ nwata na nwanne ya nwoke nke obere, Knut Wilhelm. E kwuru na ụmụnne abụọ ahụ dị n'ezigbo mma. A mụrụ Knut na 1910 ma nwụọ na
Agha Oge Oyi.