Mayer Rothschild successfully kept the fortune in the family with carefully arranged marriages, often between first- or second-cousins (similar to royal intermarriage).
Mayer Rothschild berhasil mempertahankan kekayaan keluarga melalui pernikahan buatan secara hati-hati, biasanya antara sepupu pertama atau kedua (sama seperti antarpernikahan kerajaan).