Saturday Night Genealogy Fun: Who Is #42 on Your Ahnentafel?

Well, I'm a little confused by parts of this week's Saturday Night Genealogy Fun challenge from Randy Seaver, but I shall press on and attempt to do it anyway!

Here is your assignment, should you decide to accept it (you ARE reading this, so I assume that you really want to play along; cue the Mission:  Impossible! music!):

(1) Have you identified #42 on your ahnentafel list?  If not, how about #21, the mother of #42?  If not, how about #10 on your ahnentafel list?  Do you even have an ahnentafel list?

(2) Anyway, tell us about your #42 ancestor (or #21, or #10, etc.):  full name, parents, spouse, children, birth, baptism, death, marriage, burial, etc.  

(3) Tell us about it in your own blog post, in a comment to this post, or in a Facebook Status post.  Please leave a link in a comment to this post.

So, I'm confused because I thought ahnentafels increased the numbers as they went backward in time.  If that is the case, then #21 wouldn't be the mother of #42, she would be the daughter of #42 (which is what my ahnentafel indicates).  So maybe Randy just mixed that part up?

As it so happens, I know next to nothing about my #42 ahnentafel ancestor, and not much more about #21.

Mr. #42 on my ahnentafel is my 3rd-great-grandfather John Gibson.  I have no birth or death information for him, merely his name.  His wife, my 3rd-great-grandmother (#43 on the list), was said to have been named Mary, and that's all the information I have on her.  I'm pretty sure they were born and died in New Jersey, but that's an educated guess.  I have looked for more information about them online, but with no success.

Their names were gleaned from the death certificate of my 2nd-great-grandmother Amelia Gibson (#21), who married James Gauntt.  Amelia's death certificate states that she died June 19, 1908.  Her birth, which I have as June 1831, was found in the 1900 census.

Obviously, I don't have much information on the Gibson branch of my family.  Yet another reason I need to find a lot of time to spend conducting on-site research in New Jersey.