My grandfather was Bernhard Joshua Conrad Kjellgren, born in Gotteborg in 1902. He immigrated to Argentina in 1935 where he lived and died in 1986. His father was Axel Sebastian Kjellgren and his mother was Olga Appelman.
My mother is his daughter. She is Astrid Kjellgren and was born in Stokolm in 1933. My father was from Argentina, hence my Hispanic name. Unfortunately, I don´t speak Swedish.
I hope this might help you in your research.
Best regards,
Pablo Salas Oroño-Kjellgren