I'm looking for more information on my great great grandparents who came to the US in 1890s from Switzerland.

My GG grandfather was Alexander Rudolph Kalbermatten, born April 30, 1881. He was born in Niedergesteln, Valais, Switzerland.

My GG grandmother, his wife, was Ida Indermitte, born around 1882. She was born in Steg, Valais.

I would love to know more about their lives and family in Switzerland - parents, siblings, etc. and whether there may still be anyone with those surnames still in their hometowns.