Continuing on with our series of Alfred Bonniwell documents, today’s post looks at one of two censuses that (probably) record Alfred Bonniwell in Wisconsin Territory between the federal decennial censuses of 1840 and 1850. If you need to catch up, our previous installments are here, here, here, here and here.
UPDATED May 22, 2022, to correct Charles Bonniwell, Sr.’s birth year to 1806
The Wisconsin territorial census of 1842
For background on the 1842 Wisconsin territorial census, its enumeration in old Washington/Ozaukee county, and its relation to the Clark, Turck and Bonniwell families and their neighbors, you’ll want to read Census Records for the In-Between Years: 1842.1
The official enumeration date for this census was June 1, 1842; the enumeration of old Washington county—still attached to Milwaukee County for legal purposes—was done by Levi Ostrander and officially completed on July 1, 1842. Here’s page 65 of that census. The extended Bonniwell family—and some of their notable neighbors—are circled in red.2

Full source details in note 2, below. Click to open larger image in new window.
Let’s take a closer look at each of these families and try and understand which Bonniwells were living where, in Mequon, in mid-summer, 1842…
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