There is a William Ivy Jackson, Apr. 24, 1889 - Nov. 30, 1948, buried in Greenwood Cemetery, Stoner Ave., Shreveport, Caddo Parish. http://freepages.genealogy.rootsweb.com/~crossloch/GREENWOOD_CEMETERY_PAGE_I-K.html Next to him is a grave for Jackson, William Henry , Nov. 4, 1856 - Jan. 10, 1933, s/w Mary Elizabeth, July 19, 1867 - Mar. 20, 1931 I don't know if this is the same William Ivy Jackson you were looking for. I have several Jacksons so far on this site but these were the only two together in this plot that I could tell. Hope this helps. Sharon Spaulding