1John Quincy Adams to Thomas Baker Johnson, 31 July 1797 (Adams Papers)
Though I have not hitherto enjoyed the pleasure of a personal acquaintance with you, I have long since learnt to participate in the warm affection which a most amiable and worthy family, to which you belong, bear towards you, and at this time after having formed and solemnized, the tenderest and dearest of all human connections with your beloved sister, Louisa, I am happy in deriving from it...