CONCORD, N.H. — Retired New Hampshire Supreme Court Justice Sherman Horton Jr., who served on the high court during a turbulent decade that included the attempted impeachment of the chief judge, died this week, his son said Friday. He was 83.

Sherman Horton III said his father died Wednesday in hospice care at Concord Hospital, where he had been since Monday after an eight-year illness.

Horton, after a career in private practice, was appointed to the court in June 1990 by his former law partner, Gov. Judd Gregg, to replace David Souter, who later became a U.S. Supreme Court justice. He retired in 2000.

Horton was the lone dissenting opinion on the landmark Claremont school funding decision in which the court ruled the state has a duty to pay for an adequate education.