沃特 covers 'Walt/Walter':
沃 ('wa') +
特 ('-t/-lter').
史密斯 is the boilerplate Chinese rendering of the most common English surname 'Smith':
史 ('s') +
密 ('mi') +
斯 ('th-s'). Used for many bearers: footballer Walter Smith (Rangers FC manager), and as a stock 'placeholder' Western name in textbooks.
