The other dads

From an op-ed piece in the Baltimore Sun:

...the United States has a proud past of notable stepfathers. George Washington, the "father of our country," was a stepfather to Martha's children. Dr. Seuss was a stepfather, as was the famous baby doctor Benjamin Spock. So too were authors C.S. Lewis and E.B. White, actors Ashton Kutcher and Brad Pitt, Sen. John
Kerry and singer Johnny Cash.

Former Presidents Bill Clinton and Gerald Ford had stepfathers who adopted them. Meriwether Lewis, the great explorer, had a stepfather, as did Booker T. Washington, Charlton Heston, jazz artist George Benson, country singer Shania Twain, authors Anne Perry and Truman Capote, and presidential candidate Barack Obama.