What is Neil Armstrong's grandfathers and grandmothers given name?

Question:

What is Neil Armstrong's grandfathers and grandmothers given name?

I am doing research and am stuck at finding the paternal grandparents names of neil armstrong the astronaut and the first man who walked on the moon and need to find out his paternal great grandparents names as well

Best Answer - Chosen by Asker: Here's a family tree for Armstrong, which includes citations:

http://wc.rootsweb.com/cgi-bin/igm.cgi?o...

According to this source, Neil's paternal grandparents were:

Willis Armstrong and Laura M. L. Koenig

His maternal grandparents were:

Martin August Engel and Caroline M. Katter