Robert Aldrich and his brother Anson were born in Worcester County, Mass. They came to Madison County, Illinois in 1816.
Robert Aldrich settled in Section 29 of Hamel Township. The first school in this township was built near his home in 1825.
He married Mary Selina Robinson in Madison County, Illinois on Apr 24, 1849. They were the parents of three children: Sarah, Robert and James.
Robert Aldrich was elected to the 9th Board of Commissioners for Madison County and also served in the Illinois House of Representatives.