Felice Schwartz died in 1996.
Mandi Schwartz was born on 1988-02-03.
Samuel J. Potter died on 1804-10-14.
David J. Cook died in 1907.
That would be Jackie Miles. It's near impossible to find out anything about him. (He doesn't even have a Wikipedia page.) But, I know for sure that this is the guy you are talking about, because he also put out an album called "J. Schwartz, New York" in 1967. I own it.
David J. Schwartz was born in 1970.
Lloyd J. Schwartz was born in 1946.
Michael J. Schwartz was born in 1975.
Ari David Schwartz is 6' 1".
David Nathan Schwartz is 6' 1".
David J. Gingery died in 2004.
David J. Davis died in 1942.
David J. Blackiston died in 1915.
David J. Dwork died in 1997.
David J. O'Connell died in 1930.
David J. McDonald died in 1979.
David J. Peck died in 1855.