Ionia
Also known as: Clover Plains
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Why it's listed
Ionia is a frame house of one and a half stories near Trevelians in Louisa County, Virginia. Clapboard walls and a gable roof rest on a mostly Flemish bond brick foundation. Three exterior end chimneys and small six-over-six sash windows with thick eighteenth-century muntins mark the exterior. Inside, oak-grained pine woodwork fills the western hall, including a mantel, paneled dado, closet doors and a built-in corner cupboard. Original outbuildings include a dairy house, kitchen, smokehouse, slave quarters and an early frame barn. Major James Watson built the house, then called Clover Plains, and the family was living there by 1775. It grew from an original block of two south rooms through at least four later building periods. Later owners renamed it Ionia. It is recognized as one of the oldest buildings in the Green Springs area, its best example of the Virginia story-and-a-half house, and the original seat of the Watson family.
Significance in brief: The nomination calls it one of the oldest buildings in the Green Springs neighborhood and its best example of the classic Virginia eighteenth-century story-and-a-half house. It was also the original seat of the Watson family, who later built many other houses in Green Springs.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 72001405, listed June 30, 1972. Summary generated October 2026 (model claude-sonnet-5-5, prompt v1.0-2026-10-29, confidence medium).
Key facts
| Address | 0.1 mi. E of VA 640 and 0.8 mi. N of jct. with VA 613, Trevelians |
|---|---|
| County | Louisa County |
| Listed | June 30, 1972 |
| Reference number | 72001405 |
| Resource type | Building |
| Period of significance | 18th Century |
| Architect / builder | Major James Watson (builder of Clover Plains) |
| Architectural style | Classic Virginia eighteenth-century "story-and-a-half" house |
| Areas of significance | Architecture |
| Level of significance | State |
| Status (as stated in the nomination) | Listed as in excellent condition, unaltered, on its original site, occupied, and used as a private residence and for agriculture. |
| Acreage | 640 |
| Within district | Green Springs Historic District |
| Coordinates | 38.01155, -78.14594 (NPS GIS) |
What listing means for this property
National Register listing is honorary: it recognises significance and does not restrict what a private owner may do without federal money or permits. It unlocks the 20% federal rehabilitation tax credit for income-producing buildings, state credits in many states, and Section 106 review when federal agencies are involved. See what listing means in practice.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 72001405.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q6063605
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.