https://www.snopes.com/articles/466491/ages-founding-fathers-july-4-1776/
The signers of the Declaration of Independence. Lots of young 'uns in there.
Adams, John MA 40
Adams, Samuel 53
Bartlett, Josiah 46
Braxton, Carter 39
Carroll, Charles 38
Chase, Samuel 35
Clark, Abraham 50
Clymer, George 37
Ellery, William 48
Floyd, William 41
Franklin, Benjamin 70
Gerry, Elbridge 32
Gwinnett, Button 41
Hall, Lyman 52
Hancock, John 40
Harrison, Benjamin 50
Hart, John 65
Hewes, Joseph 46
Heyward Jr., Thomas 30
Hooper, William 34
Hopkins, Stephen 69
Hopkinson, Francis 38
Huntington, Samuel 45
Jefferson, Thomas 33
Lee, Francis Lightfoot 41
Lee, Richard Henry 44
Lewis, Francis 63
Livingston, Philip 60
Lynch Jr., Thomas 26
McKean, Thomas 42
Middleton, Arthur 34
Morris, Lewis 50
Morris, Robert 42
Morton, John 52
Nelson Jr., Thomas 37
Paca, William 35
Paine, Robert Treat 45
Penn, John 36
Read, George 42
Rodney, Caesar. 47
Ross, George 46
Rush, Benjamin 30
Rutledge, Edward 26
Sherman, Roger 55
Smith, James 57
Stockton, Richard 45
Stone, Thomas MD 33
Taylor, George PA 60
Thornton, Matthew 62
Walton, George 35
Whipple, William 46
Williams, William 45
Wilson, James 33
Witherspoon, John 53
Wolcott, Oliver 49
Wythe, George VA 50