Complex sentence: At age 24 on October 7,1914, she married Joseph Patrick "Joe" Kennedy after a courtship of more than seven years; the long courtship was due to her father's disapproval of Kennedy.
Split into simpler sentences: At age 24 on October 7,1914, she married Joseph Patrick "Joe" Kennedy after a courtship of more than seven years. The long courtship was partly due to her father's disapproval of Kennedy.