I can see on familysearch dot com that Gust Heikkilä was married to Kreeta Kaisa Maalis, and died September 9, 1951. There are several Gust or Kustaa Heikkiläs arriving to the US, but I think that the one who arrived in 1915 is the right one. The passanger list shows that he came from Orivesi parish. Kreeta is born in North Dakota 1883-1884, and her widoved mother is living with Gust and Kreeta in 1910. Kreeta's mother was born in Finland, and was most likely christened Lisa or Elisabet. The last name 'Maalis' or 'Maalj' is most likely misspelled, and I cannot tell, what the original Finnish last name would have been. But Kreeta must have two siblings as her mother had given birth to 3 living children. Gust also has at least one sibling living in the US as he was noted as Gust's contact person on the ship manifest. I hope this helps a little.