The Boeing company was started by William Edward Boeing, (1881 - 1956). His father was Wilhelm Böing (1846–1890) who was from Hohenlimburg, Germany. Wilhelm immigrated in 1868. William was born in Detroit, MI.
More info here:
https://en.wikipedia.org/wiki/William_Boeing
The Boeing company was started in 1916 by William and another partner as the Pacific Aero Products Co. William had only one son, William Edward, Jr.
The stories do not seem to "match up".