The Duggars ' Rigid Rules for Dating and Marriage Have Always Been 'About Setting a Higher Standard'. Courting: Chaperones are required on get-togethers, and only side hugs are allowed. The Duggars dont date, they court, oldest brother Josh told people in 2014. The Duggars who are presently 18 or older are: Jana, John-David, Josiah, Jedidiah, and Jeremiah. Jana and John David are the oldest of the bunch, and they're often criticized for remaining single at 27 years old.