Three days before my sister’s wedding, the venue called to say the entire $14,000 balance had already been paid by someone who refused to give their name. My sister, Amelia, panicked. She thought her fiancé had secretly borrowed money. He denied it. We checked with the caterer, photographer, and florist. Every outstanding bill had been settled by the same anonymous person. On the wedding morning, the venue manager handed Amelia a sealed envelope. Inside was a note that read, “You deserve one day where you don’t have to worry about money.” She immediately started crying. Her fiancé looked confused. “I didn’t pay anything,” he said. Amelia turned to our family. “Who did this?” Nobody answered. Then our elderly uncle, who had barely spoken throughout the preparations, stood up and asked everyone to sit down. He said he’d been waiting 30 years for the right moment to tell us why he had saved every birthday card Amelia ever sent him…