In my Children of Austria posting, I listed out the siblings of my third great grandfather, Benedict Fritz, from a book profiling the residents of Wapello County, Iowa. The biography had incorrect information (such as stating Benedict was from Tyrol rather than Lech, Austria), and mysteries (mentioning Benedict was one of seven children, but only naming five and mentioning a sixth).
Recently, I found an index of probates from the Land Vorarlberg web site, which provides a more accurate look into the family’s names.