Hi, I am just starting my journey on this. I am looking for all the information about Nelson and Sarah I can find. My family is part of the Polk Iowa group. Nelson was Oliver's dad and I can not find any information on him. If you could help me that would be great. I am trying to get the information before my Gram leaves this Earth so I can tell her I found out the information about her heritage. Oliver was her grandpa and Nelson was her great grandfather. Thank you.