Counterfactual

The Parallel Lives of Estefany and Gillian

In 100 girls, Estefany found its level. 50 years earlier, Gillian occupied that same statistical address.

1983–2025

Estefany

peak 2006 2025 19401960198020002020
Peak year 2006
Peak births 238
Latest count 100
Status Stable
Peak generation Gen Z
1922–2025

Gillian

peak 1999 2025 19401960198020002020
Peak year 1999
Peak births 1,022
Latest count 47
Status Endangered
Peak generation Gen Z
Estefany and Gillian 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.