I found these past addresses. It might be worth visiting the neighbors and asking if they knew him. Best of luck!!

76 Maple St, Unit 508, Holyoke MA 01040 (senior housing owned by non-profit Pulaski Heights Inc)

68 Cabot St, Unit 704 Holyoke MA 01040

169 Prospect St Chicopee MA 01013

42 Prospect Ave West Springfield MA 01089

76 Maple St, Unit 705 Holyoke MA 01040

1346 Northampton St Holyoke MA 01040

517A N Chicopee St Chicopee MA 01020

Here's a link to a pic of his last known address: https://www.google.com/maps/@42.2103105,-72.6056759,3a,75y,118.79h,109.05t/data=!3m6!1e1!3m4!1spJCh8KOOmTBNjR6MpYS_sw!2e0!7i16384!8i8192