Henriksson Korva, Petter Olof and his sister Greta Johanna Henriksdotter Korva, Hietaniemi parish, emigrated to USA 1890.

[Maria Moborg]

I'm searching for Petter Olof Henriksson Korva, born in march 4, 1873 in vitsaniemi, Hietaniemi parish. He emigrated to North America in June 1890 probably with his friend Fredrik Frans Simu (born january 7, 1871). I do not know where he settled down.
 
His sister Greta Johanna Henriksdotter Korva, born january 24, 1866, vitsaniemi, Hietaniemi parish, also emigrated to North America but in August 1890. I have heard from other relatives here in sweden that she got to the USA and got 2 children there, but noone knows where she settled down.
 
Petter Olof and Greta Johanna had also another brother: Abraham Henriksson Korva who emigrated 1892. I could find him in Hancock, Michigan where he worked as a miner and got married to a Brita Ojala in 1899. They got a daugther Lydia who ended up in Saskatschevan, Canada.
 
Thanks for any help.