Isaac Parker was a Massachusetts Congressman and jurist, including Chief Justice of the Massachusetts Supreme Judicial Court from 1814 to his death.
He was born in Boston, the son of Daniel Parker, a goldsmith, and Margaret Parker. He was descended from John Parker, of Bideford, Devon, who emigrated to America in 1629 and whose children settled in Charlestown. After preparation at the Latin Grammar School, he entered Harvard at the age of fourteen and graduated in 1786 with high honors. For a short time he taught at the Latin School. Then, after studying law and being admitted to the bar, he moved to Castine, in what was later the state of Maine. There he set up his law practice, later moving to Portland and holding several local offices. On June 17, 1794, he married Rebecca Hall, daughter of Joseph Hall of Medford, a descendant of John Hall who settled in Concord in 1658. They had eight children.
Source: Wikipedia