Counterfactual

The Parallel Lives of Eileen and Constance

In 437 girls, Eileen found its level. 50 years earlier, Constance occupied that same statistical address.

1882–2025

Eileen

peak 1947 2025 18801900192019401960198020002020
Peak year 1947
Peak births 4,251
Latest count 437
Status Stable
Peak generation Boomer
1880–2025

Constance

peak 1950 2025 18801900192019401960198020002020
Peak year 1950
Peak births 4,441
Latest count 142
Status Endangered
Peak generation Boomer
Eileen and Constance peaked in the same cultural weather — the Boomer naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.