Olive Elkins & Simon Chesley, Rye, NH w/Wm &Saml

I just found Olive (Elkins) and her husband, Simon Chesley's burial place in a small cemetery just west of Woodlawn Rd. on South Street in Rye, NH.She died Oct. 6, 1872 (age 89) and Simon d. July 23, 1851, age 68.Next to them were William E. Chesley, who d. Nov. 13, 1887 age 71, and Samuel Chesley, who died June 14, 1880 age 72.
Eliza B. Cheney was buried in the same row, but no further information could be read off her gravestone.

Does anyone know if William and Samuel and possibly Eliza, were their children?

Any information you have on this family, would be appreciated.

Ricky