В этих романах он писал про свое тя

В этих романах он писал про свое тяжелое детство.

Результаты (английский) 1:

In these novels he wrote about their heavy childhood.

Результаты (английский) 2:

In these novels he wrote about his difficult childhood.

Результаты (английский) 3:

In these marimba he wrote about its heavy childhood.