Riddle Hospital, part of Main Line Health, said it will receive a $16 million gift, the largest since the Delaware County hospital opened in 1963 and the largest gift in the Main Line system in the last 10 years.

The money is from a trust created by John Bancker Gribbel who died in 1947 after being a long-time patient of Charles H. Schoff, who founded Riddle's predecessor, Media Hospital, in 1909, Main Line said Wednesday.

The gift will help the tax-exempt Main Line and Riddle implement a new strategic plan for 2016 to 2020, the system said.