Found his grand-uncle Michael Leszczynski (deputy sheriff) at 5071 Broadyway, Depew, Erie County, NY in the 1940 US Census. He was in ED 15-37, on SHT 6-A (line 4 was Michael and his wife Felicia was on line 5). Click on the link if you have access to Ancestry.com.
Kudos to Ancestry.com for getting their 1940 US Census working in short order. Their Image Viewer is excellent, very fast.