had three sons
Seine Mutter hatte drei Söhne, von denen er der jüngste war.
His mother had three sons, of whom he was the youngest.
Herr Smith hatte drei Söhne, die Ingenieure wurden.
Mr. Smith had three sons who became engineers.
Tom hatte drei Söhne.
Tom had three sons.
Seine Mutter hatte drei Söhne, und er war der jüngste.
His mother had three sons, and he was the youngest.