Complex sentence: Emma Margaret Tijssen was a German Bahá'í who had come to The Hague in 1937 with her husband, Otto soon joined in the autumn of 1937 by Max and Inez Greeven.
Split into simpler sentences: Emma Margaret Tijssen was a German Bahá'í who had come to The Hague in 1937 with her husband. They were soon joined in the autumn of 1937 by two other Bahá'ís, Max and Inez Greeven.