Riddle: Once there were two twin brothers. One was forty, the other was forty too. They were born in August, and celebrate there birthdays in May. Also, they both married each other.
Answer: For the answer, I will just reword the riddle.
Once there were two twin brothers. one was forty, the other was forty as well. They were born in a town called August and celebrated their birthday in May, which is the month they were born. And they were preachers, so they married each other.