Is he the Capt. David Lloyd who died 5/16/1863 and buried in Vicksburg National Cemetery? Is the photo and obituary the same as one on www.findagrave.com
If so, I also found a biography of David and his family in the 1850 Bureau Co. census -- couldn't find them in 1860 census. He and wife, Elise, has 3 sons, so you would have to be connected to one of them to be a relative.