Blog: Josiah and Matthew Henson and The Explorers Club

Last week I described the astounding life of Josiah Henson and the new Montgomery County Parks Museum that has just opened in his honor.  This week I will tell you how I got involved in his story, researched his family and possible links to explorer Matthew Alexander Henson, and how all this relates to the famous Explorers Club.

I have always been interested in history and archaeology, so a year ago I started volunteering at the Montgomery County Parks Archaeology Laboratory at Needwood Mansion.  There, while cleaning artifacts from the Josiah Henson site, I learned that the long-awaited Josiah Henson Museum would be opening soon.  Since I am a Fellow of The Explorers Club and know that explorer Matthew Alexander Henson, co-discoverer of the North Pole, was the first black member of the Club, I asked, “What is the relationship between Josiah Henson and Matthew Alexander Henson?”  The answer from Cassandra Michaud and Heather Bouslog, the lead archaeologists on the project, was, “We get that question all the time. Nobody knows!”

As an experienced genealogist, my eyes lit up.  A puzzle to be solved!  In researching this question, I quickly discovered that no one had scientifically studied the genealogy of the Henson clan.  It was known that both men were born in Charles County, Maryland, and while the U.S. Senate had asserted a linkage, one of the best of Matthew’s biographers was very skeptical.

I worked with James Henson, a famous lawyer and “Living Legend of Alexandria, Virginia” and proved his line back to Matthew Henson.  Together we discovered an old family chart with an asserted (but not yet proven) link between Matthew Henson and Josiah, through the previously unknown Paul Henson, the asserted brother of Josiah and the reported father of Lemuel Henson — the proven father of Matthew Henson.  So, if proven, Matthew would be the grand-nephew of Josiah.  (Covid has hampered further research, and I suspect that only a major family DNA effort will solve this mystery.)

Excited by this discovery, I couldn’t stop myself and kept digging. I proved seven lines of descent from Josiah Henson down to the present; estimated Josiah’s birth date as between 1796 and 1799 (later than previously asserted); proved that one of the toddlers on Josiah’s back during the famous 1830 escape was a girl, contrary to previous biographers’ assertions that all four escaping children were boys; and largely proved a descent from Matthew Henson down to Taraji Henson, the star in the film “Hidden Figures”.  I also developed a better timeline for the confusing early years of Matthew Henson.  And I was able to show that while escaping the Henson family, toddlers and all, walked an astounding 14 to 16 miles per day, mostly at night, over rough terrain!  I wrote a 134-page report on my findings (available free from

All this work was part of an Explorers Club Flag Expedition.  The Club was founded in 1904 and members were first to the North and South Poles, first to the summit of Mt. Everest, first to the deepest ocean depths, and first to the Moon. Members and Fellows can apply to “carry the Flag” of the Club on worthy efforts.

I applied and was approved to carry Flag #50 of the Club in an archaeological and genealogical effort to research the Henson clan. The archaeological part was to try to find the missing slave quarters on the Riley/Henson plantation site in Rockville, but this effort was thwarted by COVID.  The genealogical part was quite successful, however.  I was proud to carry Flag #50, since it had been into space with Virgin Galactic and had been around the world in the first solar-powered airplane flight.

But since there is still archaeological work to do, and I am now hooked on the genealogy of this famous clan, I think there is another Henson Expedition in my future!

Photos courtesy Lew Toulmin

  • G. The logo of the Henson Expedition shows the hands of Josiah Henson and Matthew Henson both pointing north – Josiah towards Canada and Matthew towards the North Pole.


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