What is the date of the election where Sir Christopher William Codrington was elected as First Member and Robert Stayner Holford as the Second Member?
CREATE TABLE "members_of_parliament" (
  "election" text,
  "1st_member" text,
  "1st_party" text,
  "2nd_member" text,
  "2nd_party" text
);
SELECT "election" FROM "members_of_parliament" WHERE "1st_member"='sir christopher william codrington' AND "2nd_member"='robert stayner holford';