Samuel, Elizabeth and Sarah Dugger were living together in Roane Co., TN for the 1850 census. John Dugger (c1803) was next door.
7th Census of the United States - 1850 Name Age Sex Race Occupation Real $ Birth Place
Roane Co, TN 20th Sub-division
Page 428, House # 1509, Family # 1559
Duggar Samuel 30 M W Farmer 120 TN
Duggar Elizabeth 35 F W 60 TN
Duggar Sarah 32 F W 60 TN
Sarah was still in Roane for the 1860 census.