Recently I have looked at the Interent and census reports to see what info I could find about your Sina Catherine (Katherine) Killen. Here is what I found.
Sina was born 5/24/1888 in Alleghany Co., N.C. and died 3/9/1978 possibly in Mercer Co., W. Va. - or Nicholas Co., W. Va. Her father was James Robert Killen, born 1855 (where?) and her mother was Gilly Mary Ann Moxley, born 3/11/1862.
Sina (supposedly - from other researchers) married Jim Brown circa 1905 and they had no children. This marriage ended shortly. Sina then married Taylor Smith circa 1912-13 and they had son George Smith (b. 1914).. Taylor died 1916 (why ?). Then Sina married Reece Leonard McKneeley circa 1917 and they had the following children: Lenna & Lita (twins, b. 1919), Eddie (1922), Reece (1924-25), Elsie (1927), Eula (1930), Violet (1932), and Earnestine (1935). Possibly Eddie died before the 1940 census. Likewise, maybe Lita was married before 1940 too. Posssibly Leonard adopted George Smith.(b. 1914).
I don't know where Leonard and Sina married, but by 1919 they had moved to Princeton, Mercer Co., W. Va. The children were all born there. Leonard died 1936 and on the 1940 census Sina and the children were still in Mercer Co.
Reece Leonard McKneeley was born 8/9/1876 in Hampton, Ga. and died 2/6/1936 in Mercer Co. (I saw some reports that said he died 6/2/1936, but the death certificate, signed by a doctor said he died 2/6/1936.) His parents were Susie Barnes and Edward McKneeley.
Sometime between Leonard's death (1936) and Sina's death in 1978, Sina lived someplace in Penn. and got a Social Security card. It appears after a few years in Penn., she moved back to Mercer (or Nicholas) Co., W. Va. For about $40 you can go to your local Social Security office and request a copy of Sina's original Soc. Sec. application, which should give you some more info about her.
I hope I havenot confused you too much, even if it is a year later that your posting . Bob Eddings - no relation.