Complex sentence: In 1919, the patriarchs of the Clough family, Joseph and Sylvia Clough, died, and the property was sold to Mr. Price and Mr. Pick of New York, who established a Camp Merrimac, a summer camp for Jewish boys, on the site.
Split into simpler sentences: In 1919, the patriarchs of the Clough family, Joseph and Sylvia Clough, died. This property was sold to Mr. Price and Mr. Pick of New York, who established a summer camp for Jewish boys on the site.