Mama takes her sickly son to see Dr. Duck.

The book begins on the wedding-day of his sickly son Conrad and princess Isabella.

Cosimo was succeeded by his sickly son Piero de' Medici, who died after five years in charge of the city.

Henry was succeeded by his sickly fifteen-year-old son, Francis II.

Mrs Bankes is reputed to have been devoted to her rather sickly son, but not to her two daughters.

The father believed that his weak and sickly son must first get physically strong working on the farm.

Esam was the posthumous son of his father, always sickly, and was indulged by his sisters and mother.

It was the dead of winter in Minnesota, the snow was piled eight feet high around our apartment and his sickly son looked like death warmed over.

But one hot morning she died in childbirth, and her sickly son only survived the ordeal until sunset.

Because Johannes had only the one sickly son, Lothar.