Census boundary evidence
Grantham — 1921 census geography (ON)
This page identifies a census boundary representation. Source-table records below retain their own reporting-unit identity and geographic qualifications.
- Map snapshot identifier
- ON126004_1921
- Source boundary identifier
- ON126004
- Census vintage
- 1921
- Source label
- Grantham
- Province code
- ON
- District label
- Lincoln
- Level
- csd
- Representation class
- E93_Presence
Census continuity group: Grantham
TCP UID: ON126004
Census source records
Each link states the assessment that connected the source row to this map. Name candidates remain candidates; no source statistic is silently assigned to the map.
- Grantham — 1921 · 1921_V1T16, row 2878 unique_contextual_name_candidate
- Grantham — 1921 · 1921_V1T27, row 2704 unique_contextual_name_candidate
- Grantham — 1921 · 1921_V1T38, row 2704 unique_contextual_name_candidate
Boundary intersections across censuses
These are computed polygon intersections in the equal-area CRS ESRI:102001. Fractions describe the area of the earlier and later polygons, respectively. They do not establish historical succession, and population has not been apportioned by area. All positive intersections are retained, including very small contributions.
| Other census representation | Years (earlier → later) | Overlap (m²) | Fraction of earlier area | Fraction of later area | Evidence |
|---|---|---|---|---|---|
| Grantham · 1911 | 1911 → 1921 | 80549646.50409955 | 0.9999999583647364 | 0.8513544382764404 | EARLIER_WITHIN_LATERHistorical succession verified: False |
| Louth · 1911 | 1911 → 1921 | 0.7237190216522584 | 8.629314161409477e-09 | 7.649212974725782e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Niagara · 1911 | 1911 → 1921 | 0.15868257423974735 | 1.5574227070935765e-09 | 1.677165819086047e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| St Catharines c · 1911 | 1911 → 1921 | 14063878.01132641 | 0.8509022294237395 | 0.14864553084924834 | PARTIAL_OVERLAPHistorical succession verified: False |
| Merritton vl · 1911 | 1911 → 1921 | 0.12698324960051693 | 5.154041923780727e-08 | 1.34212573023102e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Port Dalhousie vl · 1911 | 1911 → 1921 | 0.11679111685199037 | 4.737501235228636e-08 | 1.2344018875134838e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Stamford · 1911 | 1911 → 1921 | 0.1681288835390477 | 1.6767566510217607e-09 | 1.7770068202117574e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
| Thorold · 1911 | 1911 → 1921 | 0.44935763660408307 | 4.1163818863653044e-09 | 4.7494015790227905e-09 | PARTIAL_OVERLAPHistorical succession verified: False |
People and biographical connections
These published connections come from the separate LINCS / Dictionary of Canadian Biography layer. A life event or overlapping lifespan does not establish residence at a census date. The association remains attached to this published page; it is not assigned to every revised census group.
| Name | Lifespan | Connection |
|---|---|---|
| Reuben Wells Leonard | 1860–1930 | died here |
| William James Fitzgerald | 1888–1926 | died here |