Hello again,
I don't know if you've already found this, but Sam Catanzaro's death certificate is online at www.seekingmichigan.org. It helps to explain his death at such a young age. The link is below. If you have found any additional information about Sam's siblings or would like to share information, please contact me.

http://cdm16317.contentdm.oclc.org/cdm/singleitem/collection...