Information on the haflinger stallion Naro HF.K. 155?

My old mare was a haflinger, and her sire was Naro HF.K. 155. I know little on his background but I've researched and found out he received a grading of 1b in 2008 and that he has 2 approved sons. I was wondering if anyone could tell me a little more on his background as I've always been intrigued to find out more about him! Thanks