1880 James City Co, VA Census
E. D. 34, Williamsburg
5th June 1880
Reel: T9-1373 Page: 349A
Dwelling 155 Family 200
Armistead, Robert H., W, M, 76 yrs, Widowed, Sawyer, b Virginia, Fa Virginia, Mo Virginia
Armistead, Henry T., W, M, 26 yrs, Son, Single, Farmer, b Virginia, Fa Virginia, Mo Virginia
Armistead, Cary P., W, M, 23 yrs, Son, Single, School Teacher, b Virginia, Fa Virginia, Mo Virginia
Armistead, Julia M., W, F, 21 yrs, Daughter, Single, Keeping House, b Virginia, Fa Virginia, Mo Virginia
Armistead, Mary E., W, M, 19 yrs, Daughter, Single, No occupation, b Virginia, Fa Virginia, Mo Virginia
Peyton, Maria T., W, F, 80 yrs, Sister, Widowed, b Virginia, Fa Virginia, Mo Virginia
August, Peter F., W, M, 59 yrs, Boarder, Single, Clergyman, b Virginia, Fa West Indes, Mo Virginia
Census taker has marked almost everyone on page as not being able to read and write - I believe this is a mistake on his part.

1870 James City Co, VA Census
The City of Williamsburg, Williamsburg PO
26 June 1870
Reel: M593-1657 Page: 346A
Dwelling 1 Family 1
Armistead, Ro. H., 66 yrs, M, W, Sawyer, 8500, 750, Virginia
Armistead, Henry T., 16 yrs, M, W, Farm Laborer, Virginia
Armistead, Cary P., 12 yrs, M, W, Going to school, Virginia, Did attend school within year
Armistead, Julia M, 10 yrs, F, W, At school, Virginia, Did attend school within year
Armistead, Mary E., 8 yrs, F, W, No occupation, Virginia

1860 James City Co, VA Census
The City of Wmsburg, Williamsburg PO
7th & 8th July 1860
Reel: M653-1355 Page: 672
Dwelling 165 Family 165
Rob. H. Armstead, 56 yrs, M, Sawyer, 25,000, 20,000, Elizabeth City Co
Julia S. Armstead, 39 yrs, F, Wmsburg Co
Rob. T. Armstead, 15 yrs, M, Wmsburg Co, Did attend school within year
Wm. C. Armstead, 11 yrs, M, Wmsburg Co, Did attend school within year
Henry T. Armstead, 7 yrs, M, Wmsburg Co, Did attend school within year
Cary P. Armstead, 3 yrs, M, Wmsburg Co
Julia M. Armstead, 1 yr, F, Wmsburg Co
Maria L. Peyton, 60 yrs, F, 1000, 3000, Elizabeth City Co
Wm. G. Dodd. 19 yrs, M, Field Laborer, Wmsburg
Eliza Barker. 21 yrs, F, Seamstress, York Co

1850 York Co, VA Census
5 November 1850
Reel: M432-982 Page: 369A
Dwelling 428 Family 428
Ro. H. Armistead, 46 yrs, M, M, Sawyer, 3000, Elizb City
Julia Armistead, 30 yrs, M, F, York County
Marie T. Peyton, 50 yrs, M, F, Elizb City
Wm. T. Peyton, 19 yrs, M, F, Elizb City
Robert T. Armistead, 6 yrs, M, M, Elizb City
William C. Armistead, 2 yrs, M, M, York County

Robert died at the residence of his son, Henry T. in James City County, Virginia per Kimball G. Everingham's online family tree - to be proven.
Note: as he was aged 84 years, 6 months and 10 days when he died

Some information on this family from Kimball G. Everingham's online family tree - to be proven.

• Married: 24 DEC 1842 in Prob James City Co, VA

1. Robert Travis Armistead b: 22 JUL 1844 in James City Co, VA
2. William Clarke Armistead b: 13 JUL 1846
3. William Champion Armistead b: 28 JUL 1848
4. Susan Armistead b: 1850
5. Henry Tabb Armistead b: 12 JAN 1852
6. Samuel Peyton Armistead b: ABT 1855
7. Cary Peyton Armistead b: ABT 1857
8. Julia Maria Armistead b: BET 6 SEP 1858 AND 1859
9. Mary Elizabeth Armistead b: BET 16 JUL 1860 AND 1861