Complex sentence: In 1896, Marfan described a hereditary disorder of connective tissue that was to became known as Marfan syndrome, the term first being used by Henricus Jacobus Marie Weve (1888--1962) of Utrecht in 1931.
Split into simpler sentences: In 1896, Marfan described a hereditary disorder of connective tissue which became known as Marfan syndrome. The term "Marfan's syndrome" was first used by Henricus Jacobus Marie Weve (1888--1962) of Utrecht in 1931.