Counterfactual
The Parallel Lives of Sibyl and Beulah
In 23 girls, Sibyl found its level. 50 years earlier, Beulah occupied that same statistical address.
1880–2025
Sibyl
Peak year
1918
Peak births
299
Latest count
23
Status
Endangered
Peak generation
Greatest Generation
1880–2025
Beulah
Peak year
1916
Peak births
2,401
Latest count
20
Status
Endangered
Peak generation
Greatest Generation
Sibyl and Beulah peaked in the same cultural weather — the Greatest Generation naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.