I’m seeing “David H. Souter, Republican Justice Who Allied With Court’s Liberal Wing, Dies at 85/He left conservatives bitterly disappointed with his migration from right to left, leading to the cry of “no more Souters'” (NYT)(free-access link).

A shy man who never married and who much preferred an evening alone with a good book to a night in the company of Washington insiders, Justice Souter retired at the unusually young age of 69 to return to his beloved home state…. He turned down all the opportunities for foreign travel that other justices accepted eagerly…. No one who had Boston needed Paris, he would say.

He gave few speeches, politely rejecting all the invitations that came his way to teach, participate in seminars or give academic lectures. He rented a small apartment not far from the court, furnished it sparingly…. His regular lunch, eaten at his desk, consisted of yogurt and an apple, core and all. After an evening working in his chambers, he ran for exercise around the track at a nearby Army base….
As soon as the court recessed for vacation, Justice Souter promptly repaired to New Hampshire, where he relaxed and unwound from the term by seeing old friends, hiking in the White Mountains, sailing and reading…. Late every September, he put a few belongings in his car and drove alone back to Washington…. 
There are no immediate survivors. Justice Souter’s father died in 1976. His mother, with whom he shared a home for years and whom he later visited regularly at her retirement home in Concord, lived long enough to see her only child reach the heights of the legal profession….

After he retired, Justice Souter sold the family farmhouse and moved to a substantial in-town house in Concord. The reason, he explained, was his large book collection, which the old farmhouse could neither hold nor structurally support. Reading history remained a cherished pastime. “History,” he once explained, “provides an antidote to cynicism about the past.”