Simplify the following text for a Grade 5 native English-speaking person.
Original: As a result of the close association that grew up between the Wedgwood and Darwin families , Josiah 's eldest daughter would later marry Erasmus ' son . One of the children of that marriage , Charles Darwin , would also marry a Wedgwood â '' Emma , Josiah 's granddaughter .
Simplified: Wedgwood 's son married Darwin 's daughter , who gave birth to Charles Darwin .