Błędnie: The jubilant could not refrain from tears- he was deeply moved by the crowds who had come to celebrate his birthday. Poprawnie: The man celebrating his jubilee could not refrain from tears- he was deeply moved by the crowds who had come to celebrate his birthday.
"Jubilant" oznacza 'radosny, triumfujący' i jest przymiotnikiem. 'Jubilata' określimy "a person celebrating their jubilee (birthday, etc.)".