Counterfactual

The Parallel Lives of Gillian and Hanna

In 47 girls, Gillian found its level. 50 years earlier, Hanna occupied that same statistical address.

1922–2025

Gillian

peak 1999 2025 18801900192019401960198020002020
Peak year 1999
Peak births 1,022
Latest count 47
Status Endangered
Peak generation Gen Z
1880–2025

Hanna

peak 2000 2025 18801900192019401960198020002020
Peak year 2000
Peak births 1,912
Latest count 580
Status Stable
Peak generation Gen Z
Gillian and Hanna peaked in the same cultural weather — the Gen Z naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.