Researching family history can be challenging. Records were destroyed in various natural disasters, records were not kept at all, people changed their names, etc. One source that genealogists tend to like is the census. Why? Because starting in 1850, everyone in the household was enumerated – not just the head of the household. Generally, the enumeration went like this: name of head of household (usually this is the male), then the head of household’s spouse (usually his wife), then their children in descent from oldest to youngest then typically anyone else living in the household (borders, parents, in-laws, etc). Now it’s true, that this wasn’t always the case, but in general, that’s the principle. It’s also true that for the 1850, 1860 and 1870 census you can’t say for any certainty about the relationships of the people in the household because it’s not spelled out that way. Starting in 1880, the relationships were added to the census.
So, imagine for a moment my excitement to find my 2nd great-grandmother Nancy J. Whitney in the 1850 census.

There she is, age 7 years old (which corresponds with other census records for her age) – the oldest of 3 children. It would appear from this enumeration that she is living with her parents – John Whitney (which is also independently confirmed) and probably Hannah. Hannah is 4 years younger than John – which isn’t unheard of for a husband and wife. Hannah would have been 17 when Nancy was born – again, not unheard of – it’s certainly possible. The last person in the household is Susan Robinson – age 26. This would seem to indicate that Susan is a border – even possibly a sibling to either John or Hannah.
Here’s the rub – neither Hannah nor Susan appear in later censuses with John and Nancy. In fact, this is the only instance that I have of Hannah. I do find a marriage record for John and Susannah Robinson in 1842 (hmmm… Nancy is born in 1843 – coincidence?).

Since the 1850 census is for Wayne County and this marriage record is also for Wayne County – it stands to reason that these are the same people. So why 8 years after John and Susannah get married, they are enumerated in the same household – but she is listed with her maiden name and appears to not be married to him and John appears to be married to a Hannah?
I have not been able to find a divorce for John and Susannah. I have not found a marriage for John and Hannah. I have not been able to find a death for John, Susannah or Hannah.
So, who is Nancy’s mother?