During a 1763-1764 business trip to London, Joseph Trumble, son of Jonathan Trumble (Gov. Jonathan Trumbull, Sr.), visited the Herald's Office. His research there would lead to the spelling change of the family name from Trumble to Trumbull, the adoption of a Trumbull family coat of arms, and the Trumbull family motto, "Fortuna Favet Audaci." (Fortune Favors the Bold)
"And having, from some investigations made at the Herald's Office in London, been led to change the spelling of his name in the last syllable, from ble to bull --- a change which in 1766 his father also adopted."
"Among other things, he busied himself at the herald's office, where his researches led him to adopt the present spelling of his surname, which was also adopted by his father soon after the son's return."
During the American Revolution, The Connecticut Privateer, "Governor Trumbull," bore the motto of the Trumbull family on its pennant or streamer.
"Among the very large number of war-vessels fitted out by this State two notedly successful ones bore his own honored name, viz., the frigate "Trumbull' and the audacious privateer "Governor Trumbull," the latter bearing aloft on her pennant the Trumbull motto, "Fortuna favet audaci."
Trumbull's biographer, Isaac Stuart, in his, "Life of Jonathan Trumbull, Sen., Governor of Connecticut," states that, "He sprang from a family, which, it is now fully established, is a branch of the Turnbulls of Scotland, and owed its heraldic origin to the desperate gallantry of a young peasant, who when one of the kings of that country, being engaged in the chase, was attacked by a bull, and was in imminent danger --- "threw himself before the king, and with equal strength, dexterity, and good fortune, seized the animal by the horn, turned him aside, and thus saved the royal life. The king, grateful for the act, commanded the hitherto obscure youth to assume the name of Turnbull, and gave him an estate near Peebles, and a coat of arms --- three bulls' heads, with the motto, Fortuna favet audaci" --- bearings which are still preserved in the American branch of the family."
In 1870, during the Bicentennial Celebration of the Town of Suffield, in a letter by J. Hammond Trumbull (James Hammond Trumbull served as the first Connecticut State Librarian in 1854, and as Secretary of the State of Connecticut from 1861-1866.), he states,
"I have mentioned the clan of the Trumbulls, and that word suggests the Scottish origin of the surname and birthplace of the family.
In the course of two or three generations, the descendants of the "raiding and rieving" borderers were trained to good citizenship, and by the time Connecticut began to be settled, the Trumbles -- some of them at least -- were qualified to become planters in a "land of steady habits," and deacons in puritan churches."
It's interesting, that an article appearing in, The New York Times, May 17, 1891, titled, "Old Trumbull "War Office"," substitutes the name Turnbull for Trumbull.
"Voted, That the [CTSSAR] Secretary be and hereby is instructed to draw up and circulate papers for a memorial fund to be used for the necessary repairs and preservation of the "Old Turnbull War Office," at Lebanon, Conn.; for the erection of landmarks on historical spots, care of the graves and monuments of our Revolutionary ancestors, and, in general, the preservation of those things which tell the story of our Nation's birth in this State."
Over the years, I have encouraged Trumbull Family Descendants to wear Turnbull tartan to the Annual CTSSAR Gov. Jonathan Trumbull Birthday Commemoration Ceremonies at the War Office in Lebanon, Connecticut.