according to the document (profile pic) his mother in law, Johanna Diner, is seen living in 1902, but in geni.com she died in 1875.
Record indicates Johanna Hani POLITZER, wife of Lipot DIENER died in Budapest 22 Mar 1903.
https://familysearch.org/ark:/61903/3:1:S3HT-DY29-YNB?mode=g&i=...