The issue to me is attributing the work to the person who performed the work. If you piece the top, send it out to be professionally quilted, and then display it, you should give credit to the quilter. If you used another person's design, you should give credit to the pattern designer. Even if you bought the pattern or paid the quilter. After all, I wouldn't become the artist of Sunflowers by buying it at an auction; I would still need to give credit to Vincent as its creator. I would be very uncomfortable (large dose of Lutheran guilt here) taking credit for someone else's work, and often wonder what the real names were of the makers of some of the beautiful 17th and 18th century quilts that are attributed to the owners.