I couldn't say there were no liberals there because there were. In fact all of them were liberals, they were classical liberals. Classical liberals are the same as modern conservatives and libertarians.
Modern liberals (or Progressives) are Marxists. Marx wasn't alive back when our country was founded, so there were no Progressives. However, socialism predates Marx. The French Revolution was a socialist overthrow of the monarchy, then it devolved to the rich, then it devolved to anyone with a franc more than you. It was a bloody revolution and the French people were worse off after it was all over. Our founding fathers were not interested in socialism and saw it as a failure.