Estimates of historical migration in County Durham

Area of Science:

• Historical demography
• Genealogical research methods
• Population studies

Background:

• Anglican marriage registers are often used to study historical migration patterns.
• Accuracy of these registers as migration indicators requires validation.
• Baptismal registers provide detailed parental birthplace information.

Purpose of the Study:

• To assess the accuracy of Anglican marriage registers in reflecting migration.
• To compare migration estimates derived from marriage vs. baptismal registers.
• To quantify the underestimation of migration by marriage registers.

Main Methods:

• Utilized marriage and annotated baptismal registers from twelve parishes in Northumberland and County Durham (1798-1812).
• Linked individual marriages to subsequent baptisms to track parental origins.
• Applied Wright's Island model to estimate migration (f) from both register types.

Main Results:

• Marriage registers systematically underestimate the extent of migration.
• Migration estimates derived from marriage registers were 2-4 times larger than those from baptismal registers.
• Baptismal registers, documenting parental birthplaces, offer a more accurate migration measure.

Conclusions:

• Anglican marriage registers are unreliable for precise historical migration quantification.
• Baptismal registers offer a more robust dataset for estimating migration between birthplace and marriage.
• Further research should consider utilizing baptismal records for improved demographic analyses.