Original sentence: Before the couple were even introduced, the Duke made preparations; he held a ball for Blanche, then seventeen years old, and weeks later the William proposed to her and was quickly accepted.Blanche's unmarried maternal uncle, the Duke of Devonshire, favoured a marriage between his heir, William Cavendish, and his niece
Edited sentence: Before the couple were even introduced, the Duke made preparations; he held a ball for Blanche, then seventeen years old, and weeks later the serious minded William proposed to her and was quickly accepted.Blanche's unmarried maternal uncle, the Duke of Devonshire, was characteristically generous with his family.He favoured a marriage between his heir, William Cavendish, and his niece