Complex sentence: The original Wave Hill House was built in 1843 by William Lewis Morris in Greek Revival style, and owned from 1866-1903 by William Henry Appleton, who enlarged the house in 1866-69 and again in 1890.
Split into simpler sentences: The original Wave Hill House was built in 1843 by William Lewis Morris in Greek Revival style. It was owned from 1866-1903 by William Henry Appleton, who enlarged the house in 1866-69 and again in 1890.