Standard Chinese rendering of the surname MacDonald/McDonald. Notable bearers in Chinese-language reference:
拉姆齐·
麦克唐纳 (Ramsay MacDonald, 1866-1937, the UK's first Labour PM),
约翰·
亚历山大·
麦克唐纳 (John A. Macdonald, 1815-91, first PM of Canada). Don't confuse with
麦当劳 (Màidāngláo), the fast-food chain — same English origin, but localized as a brand with different characters chosen to sound catchier.