Your great grandfather, Alexander, b. 3/1860 IN, d. 1907, Louisville, KY, buriedValley Station Cemetery, Louisville, KY, was the son of Peter Leffler, b. abt 1824 IN, died in Harrison County, IN and Mary J. Miller (his second wife), b. 1838 IN and died after 1930 in Indianapolis, IN. Peter Leffler was the son of Peter Leffler (Sr.)b. 1780 Donegal Twp., Washington Co., PA, d. 1860 Harrison Co., IN and Catherine Fifer, b. 8/20/1785 Frederick Co., MD.
Peter Leffler Sr. was the son of George Leffler b.1751 PA, d. 3/8/1831 Harrison Co., IN and Christina Fellebaum, b. 1757 PA, d. 1816. George Leffler was a brother to Jacob Leffler (husband of Elizabeth Hewitt).
Your great grandfather was married to Delilah Miller on 3/3/1882 in Harrison Co., IN. She was bornin March of 1861 in IN and died 2/20/1936, Jefferons Co., KY. Children:
Walter Alexander Sr., b. 2/28/1887 KY, d. 2/1976 Hattiesburg, Miss. Jacob E., b. 8/1890, KY Ethel M., b. 6/1896 KY Oscar R., b. 5/1899 KY
I have more info on this line if you're interested and another contact who has researched this line extensively. Merry Christmas!