I don't know why you say this is a "non-identifying record" if it gives the surname of the bio mother.

Gail Finn was b 17 Oct 1939 and d Dec 1978 in Framingham, Middlesex, Mass. On findagrave.com she is listed as Gayle B. Finn, b 17 Oct 1939, d 21 Dec 1978, buried Sharon Memorial Park, Norfolk Co, Mass. There are many other Finns buried in this cem.