Unknown (to me) Pierce grave markers

Pittsfield MA cemetery

None are listed in:

PITTSFIELD DEATHS 1886 – 1941
http://www.rootsweb.ancestry.com/~maberksh/towns/pittsfield/pitt_deaths/index.html

Strangely enough, I have a Levi M. Pierce in my family tree, but these graves are not that family!

This is my Levi Merriam Pierce

LEVI MERRIAM PIERCE was born on 21 Jun 1833 in West Boylston, Worcester, Massachusetts, USA.

He died on 01 Apr 1908 in Springfield, Hampden, Massachusetts, USA.

He married MIRIAM (MARY) HOBBS FOSTER, daughter of William Foster and Calista Wood, on 24 Apr 1862 in Norway, Maine.

She was born on 23 Jul 1839 in Norway, Maine.

Levi M. Pierce family plot.

Father Levi M. Pierce February 6, 1827 – September 16, 1900

In the 1875 Pittsfield Directory Levi is listed as a Carpenter living at 50 Linden Street

Mother Lydia Ann (?) Pierce January 5, 1830 – September 11, 1883

Daughter Elva Adelia Pierce October 13, 1853 – September 4, 1865

Mother Lydia Ann (?) Pierce January 5, 1830 – September 11, 1883

Father Levi M. Pierce February 6, 1827 – September 16, 1900

Daughter Lilla Belle Pierce July 15, 1860 – January 23, 1938

Daughter Adelia Pierce Schroff July 15, 1870 – July 10, 1932