Select Distinct And Include Non-distinct Columns?

I would like to select a distinct query based on three fields and display the rest of the fields. For example,

I have firstname, lastname, address, city, state and zip, but I only want to use the distinct on these fields first and last name. However when i use the distinct function I get a distinct on all the selected rows. I just want to distinct firstname and lastname and display the other fields. for example,

Mary Smith New York
Mary Smithy New York
Mary Smith Maine

I would like the result to be:

Mary Smith New York
Mary Smithy New York

I don't care about Mary Smith Maine, because i am only using the distinct for "Mary Smith" firstname and last name and showing the city.