Question: Who did ed sheeran wrote nancy mulligan about?

context: No context provided
question: How was the couple Ed Sheeran wrote nancy mulligan about related to him?
short_answers: his grandparents
grandparents
context: "Nancy Mulligan" is one of the most personal songs on the album, telling the story of how his grandparents, William Sheeran, a Protestant from Belfast, Northern Ireland and Nancy Mulligan (real name Anne Mulligan), a Catholic from the Republic of Ireland, met, fell in love during the Second World War and got married at the Wexford border. Sheeran said: "They got engaged and no one turned up at their wedding. He stole all the gold teeth in his dental surgery and melted them down into a wedding ring, and they wore borrowed clothes to get married, and just basically have this kind of Romeo and Juliet romance, which is like the most romantic thing. So I thought I'd write a song about it and make it a jig."
question: What is the name of the grandmother ed sheeran wrote nancy mulligan about?
short_answers: Anne Mulligan
context: No context provided
question: What is the name of the grandfather ed sheeran wrote nancy mulligan about?
short_answers: William Sheeran

Answer: "Nancy Mulligan" is a song by English singer-songwriter Ed Sheeran. It was included on the deluxe edition of his third studio album, ÷ (2017). "Nancy Mulligan" is one of the most personal songs on the album, telling the story of how his grandparents, William Sheeran, a Protestant from Belfast, Northern Ireland and Nancy Mulligan, real name Anne Mulligan, a Catholic from the Republic of Ireland, met, fell in love during the Second World War and got married at the Wexford border.