My great-grandfather was a man named Wilhelm Langguth. He was born in Bavaria in 1864 and died in 1942. I don't know anything about him and am wondering if he might have been the person who the 'Wilhelm Langguth' geranium is named after. Any idea of how I would be able to find out this information?

I looked online and couldn't find any historic origin references.

I too had looked all over the web, asked several nurseries that sell geraniums, all with no results. Thanks Sue for your effort.