Anecdotes

Father of Peter Kellaway, pioneer in the clinical use of the electroencephalogram (EEG) test to evaluate patients with possible neurological difficulties. When Jack Ruby stood trial for the murder of Lee Harvey Oswald, President John F. Kennedy's assassin, Kellaway testified about the results of Ruby's EEG tests.

Interred at Westwood Memorial Park, Los Angeles, California, USA, in the Sanctuary of Remembrance.

The second South African-born actor to be nominated for an Academy Award as Best Supporting Actor, for L'énigmatique Monsieur Horace (1948), but lost to Walter Huston in Le Trésor de la Sierra Madre (1948). The first was Basil Rathbone for Roméo et Juliette (1936) who lost to another Walter - Walter Brennan in Le vandale (1936).

After he turned down the role of Santa Clause in the original Le Miracle sur la 34ème rue (1947), his cousin Edmund Gwenn was offered and accepted the part, winning an Academy Award as Best Actor in a Supporting Role.