Step 1 : Introduction to the question "5. The 33rd U.S. president had initials H. S. Truman. What did the "S" stand for?"
...1. Stephen 2. Nothing but S 3. Shipp 4. Solomon Harry Truman's middle initial was given him at birth in 1884 by his parents. Harry's two grandfathers were named Anderson Shipp[e] Truman and Solomon Young, and his maternal uncle was Harrison Young. The boy was named Harry for his Uncle Harrison, and "S" to cover both grandfathers.