His earliest paintings are attributed to 1750, when he worked in the vicinities of Williamsburg and
Yorktown. By the following year he had established himself as a colonial "court" painter, and painted many of the prominent families in the Chesapeake Bay area. In 1751, he made six portraits for the
Fitzhughs, one of the
First Families of Virginia. He eventually painted or copied five generations of the family during the two decades he worked for them. In 1762, he became the first instructor of the acclaimed artist
Charles Willson Peale, "exchanging one of his best saddles with its complete furniture for three lessons in Hesselius' studio." Hesselius himself received a few lessons in the 1760s from
John Wollaston, and Wollaston's style was a further influence on Hesselius' work. 1763 proved to be a busy year for John, for on January 30 he married the wealthy Annapolitan widow Mary Young Woodward, whose husband owned
Primrose Hill, where he soon moved in with her. He became more involved with his local parish,
St. Anne's Church in Annapolis. On April 4 that same year he signed a "Denial of
Transubstantiation", and is shown on church records to be a church warden. He is also shown to have sold numerous properties throughout the Annapolis area. Records show Hesselius to be a multi-faceted man. An inventory of his property taken for his will shows him owning 31 slaves, numerous scientific instruments including a
camera obscura, microscope, three violins, a harpsichord and a guitar. His last known work was dated 1777, one year before his death on April 9, 1778. , first president of Congress after ratification of the
Articles of Confederation. Painted by Hesselius around 1770. A portrait of
John Hanson, first
President of the Continental Congress (who some consider to be the true first President of the United States), was painted by John Hesselius around 1770. ==Style==