I have a William Behan (then converted to Bain/Baine/Baines in England after the family left Ireland in the 1840s/50s). William Behan was born in Ireland about 1800 (estimated) and had a son Edward Behan in Edenderry, Kings County, Ireland in 1826. So presumably (though not proved) William Behan was also born in Edenderry too. Edward Behan married Ann Quinn and had the following children: Mary (1843), Patrick (1849), William (1847) (and then Edward in Manchester in 1858).
William Behan is referred to as William Baine in a marriage certificate of his son Edward's second marriage in Manchester in 1863 to Mary Brett. His occupation is General Labourer and he is deceased.
I have not found any other family tree from Edenderry and I don't know what the family were doing there other than Edward was born there. It is possible that they moved over from Dublin or Wicklow which is only 30 miles away.
I have since discovered that Behan is derived from O'Beauchain.