Mylar Malissa Mcpherson

Looking for any information on my great great grandmother Mylar Malissa Mcpherson b poss NY state in 1815 or so and died in Boston, Erie Co NY in appro 1838. She was the first wife of James Gillard and had one son known James H Gillard b approx 1837-1838 in NY. The writing on James H Gillards death cert is hard to read so her first name may be slightly different.

Any help is appreciated

Deb