Historical place profile
Alsium
Alsium served as a port for Caere, together with Fregenae. A Roman colony was established ca. 245 BCE. The Antonine Itinerary places it 18 Roman miles from Portus at the mouth of the Tiber.
Record details
- Research ID
- catholon:place:pleiades:422831
- Catalogue ID
- pleiades:422831
- Place type
- port, settlement
- Coordinates
- 41.934047, 12.101258
- Precision
- precise
- Locator semantics
- representative_point_not_boundary
Historical description
Alsium served as a port for Caere, together with Fregenae. A Roman colony was established ca. 245 BCE. The Antonine Itinerary places it 18 Roman miles from Portus at the mouth of the Tiber.
Geographic evidence
The coordinates are a representative_point_not_boundary. They identify a research anchor and do not by themselves assert an ancient administrative boundary or the full extent of the settlement.
Provenance: Barrington Atlas: BAtlas 43 A2 Alsium
Source and reuse
This profile derives from the Pleiades current GIS record, licensed CC BY 3.0. Pleiades place record The profile preserves the source name, point, type, description, precision and provenance without silently adding a boundary reconstruction.
Research path
Compare this place with the chronological map at the relevant year, nearby political units, routes, institutions and the period portals. Where the source record is silent about jurisdiction, population or ecclesiastical rank, this profile makes no such claim.