<Tr> <Td> Baronet's divorced wife </Td> <Td> Mary, Lady Smith </Td> </Tr> <Tr> <Td> Baronet's widow </Td> <Td> Mary, Lady Smith Dowager Lady Smith, or Lady Smith if the heir incumbent is unmarried </Td> </Tr> <Table> <Tr> <Th> Position </Th> <Th> On envelopes </Th> <Th> Salutation in letter </Th> <Th> Oral address </Th> </Tr> <Tr> <Td> Knight (of any order) </Td> <Td> Sir John Smith </Td> <Td> Sir or Dear Sir John (Smith) </Td> <Td> Sir or Sir John </Td> </Tr> <Tr> <Td> Lady (of the Order of the Garter or the Thistle) </Td> <Td> Lady Mary Smith </Td> <Td> Madam or Dear Lady Mary (Smith) </Td> <Td> My Lady or Lady Mary </Td> </Tr> <Tr> <Td> Dame (of an order other than the Garter or the Thistle) </Td> <Td> Dame Mary Smith </Td> <Td> Madam or Dear Dame Mary (Smith) </Td> <Td> Madam or Dame Mary </Td> </Tr> <Tr> <Td> Knight's wife </Td> <Td> Lady Smith </Td> <Td> Madam or Dear Lady Smith </Td> <Td> My Lady or Lady Smith </Td> </Tr> </Table> <Tr> <Th> Position </Th> <Th> On envelopes </Th> <Th> Salutation in letter </Th> <Th> Oral address </Th> </Tr>

How to address a letter to a sir and lady
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