Who were they?

Youngest: Assad Thomas

Five months old, in third class. Separated from his mother as the ship sank, he was carried to a lifeboat by the stewardess Violet Jessop, and the two were reunited aboard the Carpathia.

Born 1911; died of pneumonia in 1931.

Sepia-toned Edwardian studio photograph, around 1915, portrait orientation. A middle-aged white man with a neat upturned moustache sits three-quarter facing the camera, wearing a flat-brimmed straw boater hat, a light tweed suit with waistcoat, and a wing collar. He rests both gloved hands on the crook of an upright walking cane held in front of him, sitting in a woven wicker chair with a fur or animal-skin draped over one arm. Behind him is a painted studio backdrop suggesting a leaded lattice window and drapery, with a small side table bearing a book at left. Soft, formal, dignified mood in warm brown monochrome tones.

Photo c. 1915 · public domain

Oldest: Algernon Barkworth

First class; floated away on a wooden plank, then climbed onto a capsized (upside-down) boat. Born 1864, died 1945.

Surprise: Barkworth was 47 in 1912, not 80 — the dataset gives age at death, not at the sinking. A problem in the data, not the code.