ISAAC LEVAN

Looking for info on a Isaac Levan who married a Barbara Palsgrof (Pfalzgraff, Pfalsgrof, Pfatzgraf, etc).I have a Julia or Julianna Levan b January 13 1819 d April 30 1884.She married Abraham Sallade December 24 1837.The Levan family book states her parents as a John F. Levan and Rebecca Witz.I found her burial in the Huff's Union Church Hereford Twp., Berks County, PA.It lists her parents as Isaac Levan and Barabara Palsgrof??I haven't been able to find any info on them.Does anyone have info on these people?