to the manor born

adjective2

1. •
   From an upper class or wealthy family.

   • In fact, he was to the manor born. He was a fifth-generation Washingtonian, born in the national capital on April 30, 1903; there he resided until his death on August 20, 1966. — 1997
2. •
   Eggcorn of to the manner born.

   • Presently he arrived and mounted the granite boulder as if to the manor born. — 1911