The Collaborative International Dictionary
Great-grandson \Great"-grand"son`\, n. [See Great, 10.] A son of one's grandson or granddaughter.
Wiktionary
n. son of a grandchild
Usage examples of "great-grandson".
Although he was the great-grandson of old Stonefaced Stonebraker, himself, and the grandson of the present C.
Jerana and her silent great-grandson Alan, the ancient singer pondered aloud on her career as a performer, the inadequacy of present-day vocalists, and scandals of the past.
The lady was the widow of his great-grandson, and on marrying into the family became a believer in the mystical doctrines of a science in which I was much interested, though I gave it little credit.
His great-grandson (the grandfather of my correspondent), being converted to Methodism by some wayside preacher, discarded in a moment his name, his old nature, and his political principles, and with the zeal of a proselyte sealed his adherence to the Protestant Succession by baptising his next son George.
Rance Bieber turned out to be a man in his thirties, a great-grandson of Axel Bieber.
He commits himself, too, to giving Anna Bieber friendship and support, to becoming a great-grandson.
His great-grandson, a greedy, thick-headed individual, caused the rebellion of the Boxless Freemen against his own clique of Jacksocrats.
Like Rohan, he was a great-grandson of the Ard-rian Aoife: Their grandfathers, and Desmond's father, Elham, had all been brothers, though Shane's grandsire Revelin was the only one of the four sons of Aoife who yet lived.