- source: Getty Thesaurus of Geographic Names
- the text in this section is copied from an article in Wikipedia
Lyonsdale is a town in Lewis County, New York, United States. The population was 1,227 at the 2010 census. The town is named after its principal community and its founder Caleb Lyon.
The Town of Lyonsdale is in the southeast part of the county and is just north of Boonville.
- Outstanding guide to Lyonsdale family history and genealogy resources (FamilySearch Research Wiki). Birth, marriage, and death records, town histories, cemeteries, churches, newspapers, libraries, and genealogical societies.