Vital records and event information are more reliable when they are recorded near the time of the event. The longer the time from the event occurrence that the record is made, the less accurate it may be based on the memory of the person involved.
Evidence Negative: The lack of information in this source infers an answer to this question.
[Sources & Evidence]
Don't assume that widow in earlier census records means her husband is deceased. It could mean that they were divorced.
By the time you have collected data on a couple hundred of your relatives, you will realize that genealogy software would make keeping track of relationships within your tree, filing data about individuals, and generating reports much easier. The Society has a special interest group that discusses Family Tree Maker software. Compare features before selecting the software best for you.
The 1900 and 1910 censuses lists the number of children that were born to each woman and how many were still living at the time of the census.