Geohapax Surnames in Martigues Baptism Records, 1689–1789

1689–1789 baptism records from Martigues, France, listing Type 1 geohapax surnames. The dataset includes counts of baptized individuals in two periods (1689–1720 and 1721–1789) and their occurrences in municipalities within Bouches-du-Rhône. Author Pierre Darlu published the data on figshare under a CC-BY-4.0 license.

Use Cases

• Analyze surname rarity patterns based on geohapax classification mentioned in the description
• Study demographic change between periods P1 (1689–1720) and P2 (1721–1789) based on baptism counts
• Map surname geographic distribution based on municipality (INSEE code) and occurrence counts
• Associate surname variants with plague mortality records based on the p-value reference

Strengths

• Data covers a 100-year time range (1689–1789)
• Includes counts for two distinct historical periods (P1 and P2)
• Municipality-level geographic detail with INSEE codes

Limitations

• Column-level documentation is absent; field semantics must be inferred after download
• Row count is unknown, which may limit suitability assessment
• Description metadata is limited; actual data quality requires manual inspection after download

Provenance

Source

Extracted from Table 2 of a PLoS ONE article (DOI: 10.1371/journal.pone.0346747)

Collection Method

Likely compiled from historical baptism and plague death records

Time Range

1689–1789

Freshness

Last updated 2026-04-16 17:29:29; freshness should be verified

Geography

Martigues and municipalities in Bouches-du-Rhône, France