Which of My Greatx5 Aunts was Mudered by Indians

One of the daughters of Issac Steele and Jane Barr was, according to family records married to a Kissinger. I believe they may have stayed in PA. The written history states that Mrs Kissinger was murdered, along with her children, by Indians. I have identified 2 of the 4 girls of Isaac and Jane using the family records, but I can't find a Mrs Kissinger who is listed in "white settlers killed by Indians in PA." What other data bases might I access to find this Greatx5 aunt?