Here’s a cartoon from the May 4 1934 edition of the Toronto Daily Star featuring ancedotes about celebrities:

Feg Murray (1894-1973) was once a star himself: before turning to cartooning, he won the bronze medal in the 110-metre hurdles at the 1920 Summer Olympic Games. Besides creating this syndicated column, Murray worked as a sportswriter and cartoonist for the Los Angeles Times.
Neal Burns (1892-1965) appeared in more than 200 films between 1915 and 1946. He doesn’t seem to have done anything remarkable other than scoring all of those holes in one.
Alice White (1904-1983) had starred in a number of films in the 1920s. (Warning: potential triggers ahead.) In 1933, she had ended an affair with actor John Warburton when he allegedly beat her so badly that she required cosmetic surgery to heal. Shortly afterwards, two men beat and robbed Warburton; Ms. White and her soon-to-be husband, screenwriter Sidney Bartlett, were accused of hiring the men. A grand jury refused to indict the couple, but the publicity harmed Ms. White’s career; she dropped to the bottom of the bill in the films in which she was cast and eventually became a secretary. By the way: though the cartoon above claimed that Ms. White did not know the date of her birth, her Wikipedia page lists it as August 25, 1904.
The Marx Brothers, together or separately, were a famous vaudeville, theatre, and television act. The Marxology website has a lengthy article on the lost film Humor Risk.