I work in the Madera County Library California History and Family Research Room. We have some information and photos of the Strombeck's, Chenot's, etc..and I would be happy to help you with your "black hole" in your family research. You may contact me at mksholler@gmail.com. Our hours are 11 - 6 Monday thru Thursday, then Fridays and Saturdays by appointment..would love to help you! Mary