The practice of eugenics is of all ages, it's only the term that's recent (late 1800s I believe, became a bit of a hobby for people in the 1920s and '30s).
Before that it was not "scientifically" executed, but more on an ad-hoc basis by for example banishing or killing people you didn't like to see as parents rather than sterilising them.
Post a cite please - don't just make bald statements.