How To Write A Reference Letter For A Couple . If the recipient is currently unknown, this would be likely on an academic application, for instance, then use dear sir or madam or to whom it may concern. Put the recipient’s name and address, if known, and address them as dear name. FREE 5+ Sample Marriage Proposal Letter Templates in PDF MS Word from www.sampletemplates.com Be sure to include your name and address on the letter and the date. Sample character reference letter to judge. Use our sample reference letter for immigration marriage as a template for your letter.