After three ruling Lancastrian monarchs , the crown passed to three Yorkist monarchs , the last of whom , Richard III , was killed in battle during 1485 .
Richard III -LRB- 1483-1485 -RRB-
Richard III -LRB- 1483-1485 -RRB-
简化这段文字: After three ruling Lancastrian monarchs , the crown passed to three Yorkist monarchs , the last of whom , Richard III , was killed in battle during 1485 . 输出: