If you think the following record might be your family, then I have found more information:
Emmeline Hultz - International Genealogical Index
Gender: Female , b. 1826 Netherlands; Marriage: 31 OCT 1847 , Philadelphia, Pennsylvania; m to John E Whiteman.

Among their children were Isaac Venable Whiteman (this might be Ira?) and William Lonzo Whiteman. Let me know if you think that this is a possibility.