How did John Hancock have kids?
The same way as everyone else.
Yes. They had a daughter named Lydia Henchman Hancock and a son named John George Washington Hancock. 1But neither of whom survived to adulthood. * Lydia Hancock (Oct 1776-Aug 1777); died at the age of about ten months. * John George Washington Hancock (21 May 1778-27 January 1787); died at the age of eight years. (1 taken from Wikipedia - John Hancock http://en.wikipedia.org/wiki/John_Hancock)
"John Hancock" is presumably the problematic term in that phrase, the rest of it is pretty straightforward. "John Hancock" is slang for "signature", coming from the very prominent signature of John Hancock on the US Declaration of Independence. The John Hancock Life Insurance company had a commercial jingle featuring the line "put your John Hancock on the John Hancock".
He was a smuggler He wrote his signature the largest so that the king could see it without his glasses He was educated at Harvard in London for business He was born 1737 and died in 1793 He was married to Dorothy Hancock and had two kids Lydia Henchman Hancock and John George Washington Hancock. His parents died when he was seven and was adopted by his rich uncle.