1700s Children with Flowers by American artists - Symbols or Real?

1730 Gerardus Duyckinck (Colonial American artist, 1695-1746) Girl in Blue Dress

 1730s Charles Bridges (Colonial American artist, 1670-1747) Girls of the Grymes Family

 1750 John Singleton Copley (American, artist, 1738–1815) Elizabeth Greenleaf

1755 John Singleton Copley (American artist, 1738-1815). The Gore Children