I love traditional north European patterns. The star or rose motif, also known as a snowflake, is one of my favourite. I frequently use it in the fabric design of my Woolly bags.
The origins of the rose or star pattern are discussed in two wonderful books: “Icelandic Knitting – Using Rose Patterns” by Helene Magnusson, The Icelandic Knitter and “Traditional Scandinavian Knitting” by Sheila McGregor. Both books are great references and between them cover knitting traditions in Iceland, Norway, Sweden, Denmark, and the Faroe Islands. If you’d like to know more about this subject, I would highly recommend either of them.