I could pinpoint Ernest Aqiulons birth record in Risinge parish, where the cannon foundry works of Finspång is situated.
"Ernst, born nov 30, baptized Feb 1, parents J O E Aquilon, lieutenant, and Agnes Carolina Lyall, baptism witnesses: widow Fredrique Aquilon, Stockholm, widow M A Morris, USA, merchant Gustaf Gylling, Montreal, Canada, and wife Fanny Gylling, née Lyall, Mrs M E Bieber, née Lyall, principal Harry Lyall, USA."
I searched Aquilon in the Swedish census of 1900. The father is there, now a captain, Johan Otto Ernst Aquilon, born in 1857 in Stockholm, residing at Katrinedal in the town of Karlskoga, remarried, and two children from a previous marriage and a son in the present marriage living with him. His apparent mother, the widow Fredrika or Fredrique Aquilon, born in 1826 in Stockholm.