por aquel entonces

back then

→ por
phrase Rare #35,621
back then Refers to a time in the past, often a somewhat distant or previously mentioned time.
SP: Por aquel entonces, yo vivía en Madrid.
EN: Back then, I lived in Madrid.

Por aquel entonces allí vivía una tribu salvaje.

At that time a savage tribe lived there.

Por aquel entonces vivía solo en la casa.

At that time he lived alone in the house.

Por aquel entonces, solo teníamos quince años.

At that time, we were only fifteen years old.

Las cosas por aquel entonces eran diferentes.

Things were different back then.

Por aquel entonces aún no existía Google Translator.

Back then, Google Translate didn’t exist yet.

Estaba en el extranjero por aquel entonces.

I was abroad at that time.

Por aquel entonces, Tom no era muy feliz.

Back then, Tom wasn’t very happy.