The following leads to a PDF of
Nahman Avigad, Hebrew Bullae from the Time of Jeremiah: Remnants
of a Burnt Archive (Jerusalem: Israel Exploration Society, 1986), 64-66,
69, 74
showing that “Ishmael” was a common name used during the time of
Jeremiah (and Lehi). Not a huge issue in apologetics, but this source has been
referenced here and there in a few articles, so I thought I would make a scan for
those who wished to see the relevant pages themselves.