Counterfactual

The Parallel Lives of Marykatherine and Diamond

In 18 girls, Marykatherine found its level. 50 years earlier, Diamond occupied that same statistical address.

1971–2025

Marykatherine

peak 1994 2025 192019401960198020002020
Peak year 1994
Peak births 34
Latest count 18
Status Rising
Peak generation Millennial
1908–2025

Diamond

peak 1999 2025 192019401960198020002020
Peak year 1999
Peak births 2,160
Latest count 94
Status Endangered
Peak generation Gen Z
Marykatherine and Diamond peaked in the same cultural weather — the Millennial naming world. They are not replacements; they are siblings separated by 50 years, occupying the same statistical address at different addresses in time.