I have just been given some Wendy Donna yarn by a friend and the gauge for a 10x10 square is 18 stitches and 26 rows. The yarn is 77% acrylic,15% mohair,6% polyester and 2% nylon. needle size recommended is US 4-6.(3.75mm-4.5mm.)
I found your query while searching online for a pattern for it. I'm looking forward to seeing what it knits up like as it has an interesting texture and mix of shades.