Writing to the Governor-General

When writing to the Governor-General, his full title is:

His Excellency The Honourable Sir Anand Satyanand GNZM, QSO
Governor-General of New Zealand

The title of the Governor-General's spouse is:

Her Excellency Lady Satyanand

If you are writing to the Governor-General, address the letter to:

His Excellency The Honourable Sir Anand Satyanand
Governor-General of New Zealand
Government House
Private Bag 39995
Wellington Mail Centre
Lower Hutt 5045

You can write to Her Excellency at the same address. In either case, start your letter with: Your Excellency.