Henderson, John, of New  London, married Margaret, dau of Susanna Mckean and aunt of Governor McKean.  He was from the north of Ireland, as were most of the settlers in that township.  Edward Henderson of New London who died in 1732, mentions in his will his brothers John and David.  John and Margaret Henderson had children - Andrew, the eldest son; Edward, John Elizabeth (married a Hall; and Margaret, married to a Crawford;  John moved to Kentucky, where a township was named for him.

Andrew married Elizabeth Finney, dau of William and sister of Judge Walter Finney, and died in New London in 1762.  Their children were John, William, Thomas, Andrew, and Elizabeth, who married William Carlisle.  William and Andrew were officers in the Revolution, and the first a member of Assembly.  They settled in Huntingdon Co, where Andrew was for a long time prothonotary.  Thomas was drafted and served in the Revolution.  His mother during the Valley Forge encampment took her stock of blankets and stockings there and gave them to the soldiers.  She died in 1816, aged 88.  Thomas married Jane Evans, dau of Col. Evan Evans of London Britain.  He was for a long time a magistrate and a highly-esteemed citizen; died Feb 8 , 1823, aged abut 66 years.  He left 6 daughters - Margaret E. and others - who sold the farm about 20 years ago, which had been in the family since the first settlement, and moved to Wilmington, Del.