ArticlesCollierPicture Collier County Sheriffs Office – Missing person By TrenderReporter - June 24, 2020 0 950 Share Facebook Twitter Pinterest WhatsApp Have you seen this missing man? William J. Louwsma, 64, is a white male with blue eyes and grey hair. He is 6 feet tall and weighs about 170 pounds. He was last seen May 23, 2020. Family is concerned for his safety.