A Dhuine Uasail (Dear Sir) and A Bhean Uasal (Dear Brother) are more formal ways to address a letter (Dear Madam). Don te lena mbaineann, which means "to whoever it may concern," is another alternative. Letters to celebrities or public figures often include only the recipient's first name. You can also write to an individual person with an Irish name. If they have more than one title or surname, then you should write to them individually. For example, if they have both a first and second name, you should send your letter to both names separately. In personal letters, it is usual practice not to use the pronoun "you" unless the writer knows the addressee well enough to be sure that they will understand who it is that they are writing to. If you are writing to more than one person, then you should write each one by their proper name instead of using "you" because letters written like this are called "collective letters."" Here are some examples of letters: To: Mary Jones From: John Doe Date: November 25, 2012 Subject: Happy Thanksgiving! Mary, I just wanted to say thank you for being such a great friend.