Misc: name of scale used to judge the brightness of stars?

Questions

If the letters mfh came after your name what would it mean?

Who first uk no 1 hit was into the groove?

In which year was the first ever fatality from legionnaires disease?

In 2001 how mnay films were given certificates by the british board of film classification?

Who designed the modern stained glass window at the Church of All Saints, Tudeley Kent?