Armstrong

Armstrong is a family name which refers to the Armstrong Family in the series:
 * Amue Armstrong, one of the younger sisters, older than Alex
 * Catherine Armstrong, the youngest sister, the only one younger than Alex. Very strong.
 * Alex Armstrong, a major, younger brother of Olivia, Amue and Strongine. The only known Alchemist, whose name Strong Arm is a play on his family name.
 * Olivier Armstrong, a major general, daughter of Philip, elder sister to the others
 * Philip Armstrong, father of the others
 * Strongine Armstrong, one of the younger sisters, older than Alex