1880 Saint Louis, Saint Louis, MO
William Tanner, b. NY, 55, blacksmith
Harriette, wife, b. NY, 50
William Kendvik, sonlaw, b. AR, 25, painter
Cora Kendvik, dau, b. NJ, 18
Paul Kendvik, grson, b. MO, 2
Nellie Fargo, boarder
The Kendvik/Kendricks must have moved to their own place becaue the same Census, same town:
Marion Kendricks, b. AR, 24, painter
Cora, wife, b. NJ, 18
Paul, b. MO, 2
I can't find any of the family after 1880. William and harriette aren't in the Pre-1910 on-line death database either but death certificates weren't required until 1910.
They probably died in Saint Louis (city). The Saint Louis Genealogical Society, www.stlgs.org/
provides many sources of info. You can join and then log in to Death Members Only. They also have obituaries. Successful Searching!