The term “individual” was not applied to humans until the mid-1600s. Before that, everyone was identified as part of a village. Village society was not about individuals but about the success and survival of the village. People didn’t live on their farms; they lived in the village and walked or rode to their farms (which were nearby, but were not considered home). In a time where villages were few and far between, considering the village as the irreducible unit would have helped ensure that everyone had food and a degree of protection.
The original source of the modern word is the Latin individuum, a noun that meant “an atom” or “an indivisible particle.” In Middle English individuum began to be used in the early 1400s to mean “individual member of a species.” But the idea that it could mean “a single human being” (as opposed to identifying people as a segment of a group) emerged in the 1640s. The current, common meaning of “a person” has only been traced back as far as 1742.