Canton: La Chaux-de-Fonds, Neuchatel

Seeking info on my grandfather, Wilhelm Roth and his father, Johannes Roth, and their predecessors. Wilhelm
was born in Canton Unterwalden on Oct 18,1865 and at some point lived in La Chaux-de-Fonds before immigrating
to Kansas then Oregon, USA. Johannes's wife's name was Anna Ramseyer. Don't have a birthdate for him but Anna's
was 1836. Would appreciate any info on them or when they actually moved to the US & who were their ancestors.