In October 1934, Donald Eugene Steele and Barbara Alice Lowe were married at her parents’ home in the Mar Vista region of Venice. The ceremony was held at 2 o’clock in the afternoon on Thursday, 11 October. Dr. James Hamilton Lash, minister of Hollywood’s Congregational Church, performed the service. Bobby’s sister‑in‑law, Marjorie Lowe, was the matron of honor. Marge had married Bobby’s brother, Jerry, who had first introduced Bobby and Don over a bridge game. The best man was Don’s roommate from Caltech, Homer McWilliams. Bobby was given away in marriage by her father, Frank Lowe.

In the Fall of 1984, Don and Bobby traveled by train from Los Angeles to Chicago to celebrate fifty years of marriage. celebrated their Golden Wedding anniversary at Chicago’s Whitehall Hotel Their three sons, two daughters‑in‑law, and two grandchildren joined them for the celebration on October 9.