I need more informaton if you asking for me to look for four individuals in 5 census years for a total of 20 lookups. What census years do you expect to find them in the Davidson Co.? Will they be found in one household? What are their approx. year of birth or a range of 5-10 years? Who will be the head of the household? Most of the census info that I have only names head-of-household in the census index so this would be very helpful or I would have to view each household for the individuals and with no idea of their ages, it would be nearly impossible to find your specific individuals. Were Levi and Madeline spouses? If so, do you have a marriage date that would tell us when I would find them together in one household and which census year? You must have some additional information to have these specific names so help me to help you by providing it.