entertainment: in which bbc1 drama series did lenny henry star as headmaster ian george?

Questions

Sir Walter Raleigh is executed in London.?

Edmund Halley (in London), sky watcher, namesake of Halley's Comet, born.?

Pennsylvania granted to William Penn by King Charles II.?

Severe earthquake in New England.?

James Boswell (in Scotland), Samuel Johnson's biographer, born.?