The quilt itself is a mass produced commercial quilt sold all over the country through specialty retail outlets like the one linked below. I doubt that it is US made although it is US distributed. The company is Ko & Co., Inc. dba Elegant Decor of Norcross, GA.
https://www.blackmountainquilts.net/...crest-Red.html
http://elegantdecor.biz/
They are not very likely to share the pattern details, imho. Does anyone else find it odd that they promote the quilt on the wrong size bed?