I found lots of info on Angeline Dora Rondo/Rondeau and her family here: http://news.nnyln.net/
You have to choose a county in NY and search each one. I think I found the most info in Clinton and Franklin Counties. Very interesting info on her children including an obit and will for her husband John.

She was married to John Rondo/Rondeau and lived in upstate NY. They were living in Belmont, Franklin, NY in the 1880 census. In Ellenburg, Clinton, NY in 1920. Angeline Rondo wasliving with her brother Mitchell Dory(Dora) in the 1930 Ellenburg, NY census.