The Peter Engleman whose death certificate you found was my great grandfather.Unfortunately, I don't have his siblings yet, although as of about 1910, he had a brother in Chicago and two sisters in California, based on some letters we have of his wife.
I do have a photo of him, taken at perhaps age 30 in Illinois.
I also have a photo of Urbanus Engleman and his wife. Furthermore, I have a photo of "Alex Engleman, father of Urbanus" (written much later than the photo was taken, I believe).
I also have a little information on the Behrs, his wife's family. Her living sisters at about 1910 were Lena, Mary, and Susie.Her living brothers were Joe and Charlie. Her mother bore 13 children, based on her letters.