DUBLIN — Seamus Mallon, a dogged champion of nonviolent struggle and one of the key architects of peace in Northern Ireland, died on Friday at his home in Markethill, County Armagh. He was 83.

The female, aged in her 30s, and a male in his 40s both escaped injury after the overnight incident in Cookstown. The front door of their home at Princess Avenue was set alight shortly after midnight.

Mallon, who opted to look after his sick wife rather than seek to replace Hume as SDLP leader in 2001, makes an appeal in the final section of the book for a shared home place in Northern Ireland ...