there were 7 from Virginia that didn't sign
In all, 70 delegates were appointed to the Constitutional Convention, but out of that 70 only 55 attended, and only 39 actually signed.
George Mason (December 11, 1725 - October 7, 1792)
Known for: being the "Father of the United States Bill of Rights."
Reason for not signing: refused to sign because the Constitution at that point lacked a "Bill of Rights."
James McClurg (1746 - July 9, 1823)(left early)
Known for: being one of three physicians (along with James McHenry and Hugh Williamson) involved with the Constitutional process.
Reason for not signing: left early, feared that his vote would produce a division amongst the Virginia delegates.
Edmund Randolph (August 10, 1753 - September 12, 1813)
Known for: being the first United States Attorney General.
Reason for not signing: he believed it had insufficient checks and balances. He later reversed his decision and worked for its ratification in the years following.
George Wythe (1726 - June 8, 1806)
Known for: designing the Seal of Virginia with the motto Sic Semper Tyrannis ("thus always to tyrants.")
Reason for not signing: Left early to be with his wife, whose health was failing.
Patrick Henry (May 29, 1736 - June 6, 1799)
Known for: "Give me Liberty or give me Death!" Speech
Reason for not signing: feared it endangered the rights of States and individual freedoms.
Richard Henry Lee (January 20, 1732 - June 19, 1794)
Known for: his role during Second Continental Congress in pushing for the colonies' independence from Great Britain. (The Lee Resolution).
Reason for not signing: refused to sign because the Constitution did not yet have a Bill of Rights.
Thomas Nelson (December 26, 1738 - January 4, 1789)
Known for: his role at the Virginia Convention towards convincing Virginia to declare independence from Great Britain.
Reason for not signing: Failing Health.