Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
When did Louise, Princess royal get married?

### Inputs:
table_name: table, columns: ['Name dates', 'Eldest daughter from (date) to (date)', 'Father', 'Date married', 'Husband dates']

### Response:
SELECT Date married FROM table WHERE Name dates = louise, princess royal