Complex sentence: In 1922, he changed his name to the more Germanised Mickl and married Helene Zischka in Klagenfurt; their only child, Manfred, was born in 1923.
Split into simpler sentences: In 1922, he changed his name to the more Germanised Mickl. He married Helene Zischka in Klagenfurt; their only child, Manfred, was born in 1923.