I just seen your post but, Catharine Barnhardt is my Great Grandma! Her son John Cefus Bryant born in 1921 is my Grandpa! I believe her parents were George and Sarah (Hall?) Barnhardt. I haven't found much on Great Grandma Lena. I did find a 1910 census from Vermilion County, Illinois. But it stated that she was the only child. And I haven't found any siblings. I did find another census that incorrectly listed her name as Lina. Some of the records list her name as Barnhart and some are with the spelling Barnhardt. I'm not sure of the correct spelling. Also, her grave (located at Elmwood Cemetery in Centralia) spells her name Catharine. But I've also found her name spelled Catherine. I have also found her mother's death certificate. I realize you posted this a while ago, so if you have found anything else out, please let me know! My mom (Juli Bryant-Hatcher) and Ibeen stuck on her and her parents for some time now and it's been quite frustrating! Thank you in advance and I hope I've helped some!