Charles Thomson was born in Maghera in 1729 and moved to North America in 1739. He served as the secretary of the Continental Congress and signed the Declaration of Independence. He helped design both the front and back of the nation’s Great Seal in 1782. (WP)

He is honoured in his home town by the board shown here. Thomson’s design for the reverse of the seal – the all-seeing eye over an unfinished pyramid (WP) – appears in the eagle’s left-hand wing, and his preliminary sketch, with wing-tips pointed downward (WP), in the right-hand wing.

Meeting House Avenue, Maghera

See also: the Visual History page of Ulster-Scots Murals.

Text of the information panel: “The Final Design of the Great Seal – June 20, 1782. On June 13, 1782, Congress asked Charles Thomson to come up with a suitable design for America’s Great Seal. With the reports and drawings of the three committees before him, he set to work. Thomson had served the past eight years as the Secretary of the Continental Congress where he acquired a reputation for fairness, truth, and integrity. Well-versed in the classics, he was once a Latin master the Academy of Philadelphia. Although today he is not a well-known founder, Charles Thomson was at the heart of the American Revolution. Thomson incorporated symbolic elements from all three committees with ideas of his own to create a bold and elegant design. He made a sketch and wrote a description of his preliminary design. For the front of the Great Seal, Thomson drew an American bald eagle and for the centrepiece he a [sic] placed the shield upon the eagle’s breast. Thomson envisioned an eagle “on the wing and rising.” In the eagle’s right talon is an olive branch. In its left, a tightly drawn bundle of arrows. Thomson said these symbols represent “the power of peace and war.” In the eagle’s beak, he placed a scroll with the first committee’s motto: E Pluribus Unum ‘Out of Many, One’. For the crest above the eagle’s head, Thomson used the radiant constellation of thirteen stars suggested by the second committee. He described the light rays as “breaking through a cloud.” For the reverse side of the Great Seal, Thomson used Barton’s (third committee) suggestion: an unfinished pyramid with the eye of Providence in its zenith, but added a triangle around the eye (like the first committee did). He also created two new mottos: Novus Ordo Seclorum ‘A New Order of the Ages’ and Annuit Coeptis ‘Providence has Favoured Our Undertakings’. After consulting with William Baron, the position of the eagle was changed to “displayed” (wings spread with tips up) and the chevrons on the shield were changed to the vertical stripes we see today.”

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