My grandmother, Ida Denenberg, was born in Stawiski. I have some data from the Suwalki-Lomza Landsman Journals. There is a print version of the Yizhkor book available.
Domb/Dab/Newman Grajewo, Ostrow Maz
perhaps Suwalski, Ludwinowski
paternal: Kanner/Kangiser Long/Lant Tischler perhaps Ziman - Lithuania Latvia?