Per original will of Thomas Neel, Elizabeth was wife of William McColah.Sarah appears to be wife of Samuel Lofton, not Samuel Allen.No Allen is mentioned in the original will, only in the transcribed will on file in Mecklenburg. Appears to be an error in transcribing. Original hand written will in Archives says Samuel Lofton. Also, Margaret is Samuel Lofton's daughter per the will.
Hope this helps -The error in the transcribed will in the Mecklenburg courthouse shows the importance of always trying to get the original copy that sometimes can only be found at the State Archives.
Also per research, this son Andrew was a Captain and died in 1776 fighting the Indians. His wife was L. Smith, the daughter of Aaron Smith and Elizabeth Carraway.