Where in Finland is...?

You can use Google maps if you like. But sometimes a better option is the official map site: Kansalaisen karttapaikka. It provides an address search but the the more useful option is place name search.

Do not worry about the municipality field unless you are already sure you have the right value for it. Enter the name you are searching to the search field. To search for places with the beginning of the name only, cut with *.

In the result list each row ends with the type of place: House, swamp, island, forest, elevation etc. Before that you can see the municipality the place is in. Press control down and select all that look promising and click "Show selected on the map".

Please note that farms/houses today are not necessarily in the same place as the farm/house with the same name ~100 years ago.