Attached is a Jonathan Hill Jr's death in Roxbury Ma Jan 1850. Parents Jonathan and Sally. Maybe the child of Jonathan and Sukey.
Attached is also the town record for his death which lists burial as Warren St B Gd - which is probably Burial Ground.
Here's a little info on that cemetery.
3.Warren or Kearsarge Avenue Burying Ground site, 1818. (A)
Note: Cemetery was closed in 1883. The graves were removed to Mount Hope and Forest Hills cemeteries and the area converted to a playground in 1890.
Copy of Inscriptions upon the Grave-stones in the Kearsarge-Avenue cemetery, Kearsarge Avenue, Roxbury : copied July 1890, by Garrett & Wood, surveyors (Boston, 1890), 28 pp.
Not in WorldCat or at FHL, but found at New England Historic Genealogical Society, Boston.
Forest Hills Cemetery | 95 Forest Hills Avenue, Boston, Massachusetts 02130 | Telephone 617 524 0128 | Fax 617 524 0848 | firstname.lastname@example.org
355 Walk Hill St Mattapan, MA 02126
Thinking that if this is the son then maybe the father is buried with him.
I know the dates are way off - but maybe related and you might possibly find something.
Records for deaths online start 1841. You could contact the Mass Archives and see what they have for the year you are interested in - email@example.com