Robert Piatt was born c1838 in Ohio to James Henry Piatt and Tabitha A 'Tempest' Morgan. He married on August 28, 1862, in Cooper County, Missouri, Mildred Blalock. His mother had died the previous year. I believe Robert and his father married close to the same time, however, I do not have the record for James' second marriage to Sarah Ellen Smith Lloyd (probably in Cooper County, Missouri). She was the widow of George Lloyd.
Robert was with his family in Clark County, Indiana, on the 1840 census and in Cabell County, Virginia in 1850. In 1850 the siblings on either side of him were listed as born VA while he was shown as OH. However, on the 1860 census of Cole Hill P O, Palestine, Cooper County, Missouri, he was listed as born in VA. On the 1870 census, Robert's father and second wife and their children were in Clear Creek Township, Cooper County, Missouri. But, I do not locate Robert.
Robert and Mildred had the following known children:
George T Piatt b: c1863 MO
Elizabeth E Piatt b: c1865 MO
John R Piatt b: c1867 MO
Tabitha A Piatt b: c1870 MO
Willie A Piatt (daughter) b: c1874 MO
Andrew W Piatt b: c1878 MO
Liza Piatt b: c1880 Benton Co, MO
By the 1880 census of White MCD, Benton County, Missouri, they appeared as follows:
Piatt, Robert age 42 born VA / mwm / farmer / father/mother born VA
Piatt, Mildard (wife) age 35 born NC / mwf / keeping house / father/mother born NC
Piatt, George T (son) age 17 born MO / swm / works on farm / father born VA/mother born NC
Piatt, Elizabeth E (daughter) age 15 born MO / swf / father born VA/mother born NC
Piatt, John R (son) age 13 born MO / swm / works on farm / father born VA/mother born NC
Piatt, Tabitha A (daughter) age 10 born MO / swf / goes to school / father born VA/mother born NC
Piatt, Willie A (daughter) age 6 born MO / swf / father born VA/mother born NC
Piatt, Andrew W (son) age 2 born MO / swm / father born VA/mother born NC
Piatt, Liza (daughter) age 7/12 born MO / swf / father born VA/mother born NC
This family was enumerated 3/183/17/35, I also had listed as Henry County(?). Also living in Benton County was Robert's sister, Harriet Mallott with her family and their younger sister, Cordelia Piatt. Robert's father and many siblings were still in Cooper County, Missouri.