Olena, Illinois
Olena is an unincorporated community in Stronghurst Township, Henderson County, Illinois, United States. Olena is located on County Route 6,  north-northwest of Stronghurst. History
Olena was laid out on August 14, 1838, by Robert Kendall. It had, in the 19th century, a population of approximately 300 inhabitants. References

Further reading
History of Mercer and Henderson Counties

Unincorporated communities in Henderson County, Illinois
Unincorporated communities in Illinois
1838 establishments in Illinois