Rachel Pinion or Adeline Pinion - Missouri 1872 to 1894

I am trying to find any information on a Rachel Pinion or a Adeline Pinion.

My GreatGrandfather is Ollie Oscar Betterton. On his Death Certificate his mother is listed as Adeline Pinion.

I also have a Marriage Certificate for Ollie's parents. William James Betterton and Rachel Pinion were married in Barry County, Missouri in 1888. The Marriage Certificate states that they were married in the home of the Bride, not the home of the Bride's father.

Ollie Oscar Betterton was born in Barry County, Missouri in 1892.

I have a note that a second son was born, Lee Betterton, in 1894. I also have a note that Rachel or Adeline Pinion Betterton died in 1894. I'm assuming she may have died in childbirth.

Does anyone have information on my GreatGreatGrandmother that died too young to leave behind a good paperwork trail?

Thanks so much.

~Susan