Hi. Your Uncle Karl was a long-time buddy of my father, John Bradley. I once went skiing with the two of them in Stowe, Vermont, about 1958. I recall when Karl's German niece and nephew would visit, and the name Fronie does sound familiar, although that's about all I can say. Karl died a long time ago (early 1980's?), and Lois just a few years ago.
I think your Ellis Island information concerns a different Karl Fahrner. The story we have always understood about him is that he came to America as the alternate ski jumper on the German 1932 (Lake Placid) Olympic team. He decided to stay, and became a ski instructor at Alta in Utah about the time that resort was first developed. Eventually, but still before the war, he became an instructor at Sun Valley, and told tales of being around movie stars like Norma Shearer and Anne Southern.
In 1948, I think, he entered the Harriman Cup Races at Sun Valley, went off course, and shattered his hip on a rock or stump, ending his skiing career. My dad always thought Karl received a decent legal settlement as a result, enough to buy or set up a sawmill near Shinglehouse, Pennsylvania, which he operated until he retired in the 1970's. Shinglehouse is just across the New York border, about 20 miles from Cuba Lake.
Karl was very well known in the area, in great part for the force of his personality, but also because he was instrumental in promoting skiing in the 1940's in Western New York. Although I don't think he was ever an owner of any of the local resorts, I know he helped set up the ski jumping and downhill areas in Allegany State Park, and he was for a short time a director of Holiday Valley, which was founded by two of his close friends, William and Edna Northrup. Edna has written a book, "For the Love of Skiing," which has a few pages devoted to Karl. He was also instrumental in promoting sailboat racing on Cuba Lake, and was one of the two people who led the establishment of the Cuba lake yacht Club and the building of its grounds in 1954.
I know Karl and Lois lived in Sun City, Arizona at the time he died, but I am afraid I don't have any information about his German ancestors. Since your post here is over four years old, perhaps you have had some luck since. I hope this reaches you. If so, you can contact me directly at firstname.lastname@example.org