William R. Cronk, 91, of Newton, N.H., and formerly of Haverhill, died Saturday, April 23, at Mike Conley Cornerstone Hospice House, Clermont, Fla. He was born in Haverhill, April 28, 1924, son of the late William and Elsie (Carrington) Cronk. Educated in the Haverhill school system, Cronk gradua