No, they didn't. What are you, just a troll?
You can't produce one single quote from George Washington, Thomas Jefferson, James Madison, any other Founder or Framer, or any major authority in the history of the United States that ever said Washington, Jefferson or Madison, or any of our other early Presidents, was ever "grandfathered in" to eligibility.
On the contrary, it has been clearly understood by all significant historians and legal experts throughout history that the purpose of the grandfather clause was NOT for Washington, Jefferson and Madison, but to honor Founders like Alexander Hamilton, born on the island of Nevis, and James Wilson, born in Scotland.
And this has been documented, in the past, right here at FreeRepublic.
“No, they didn’t.”
You need to read the constitution.
Article II Section 1
http://www.law.cornell.edu/constitution/articleii
“No person except a natural born citizen, or a citizen of the United States, AT THE TIME OF THE ADOPTION OF THIS CONSTITUTION, shall be eligible to the office of President; neither shall any person be eligible to that office who shall not have attained to the age of thirty five years, and been fourteen Years a resident within the United States.”
Every president up to van Buren was Grandfathered as an exception to the NBC clause in the US constitution.
This is *basic* US civics. You need to reread the constitution.