I had my only son die of cancer.
She mourned over the death of her only son.
All his hopes evaporated when he lost his only son in the war.
His only son succeeded to all his wealth.
She lost her only son in the traffic accident.
We named our only son Tom after my grandfather.
It was a great tragedy for them to lose their only son.
He had his only son killed in the war.
The accident deprived her of her only son.
She may well be proud of her only son.