Complex sentence: After the 16th century alterations little work was carried out on Beaupre, and after the English Civil War the Basset family fortunes went into decline at the beginning of the 18th century the Basset inheritance eventually passed to the Jones family.
Split into simpler sentences: After the 16th century alterations little work was carried out on Beaupre, and after the English Civil War the Basset family fortunes went into decline. At the beginning of the 18th century, the Basset inheritance eventually passed to the Jones family.