I have Otis and Alva as childern of Rufus and Annie on the 1880 ILL census.
Ora and Silas were married Silas was not her sibling
Also only Annie or Anise Stephens was from Posey Co, Ind. Rufus was from Wayne Co, ILL.
I have the obit for Annie that tells this. I have the obit/last will on Silas Parker that states the wife as Ora.
Not doughting your info on your obit for Clarissa Tanner I would love to see it because with your stuff and mine we can maybe get it together. People named the children after family we may both have right things wrong times.