MIDDLETOWN, R.I. — The St. George’s School received a large gift: $4 million from the estate of Albert W. Merck, a 1939 graduate who died last year and is the grandson of the founder of Merck & Co., a pharmaceutical company. “I'm delighted because of what [the gift] will allow us to continue to do in the Merck-Horton Center and I'm delighted that the gift will reflect Al's vision both for St.