In Memory of
who exchanged Worlds,
Augst 29th 1793;
in the 26th year
of her age.
Also MARY, her Infant,
who died Sept. 14th 1793,
aged 8 Months.
Ye Angels guard this sleeping Clay,
Till comes the great decisive day;
When in their SAVIOUR'S Image drest,
They'll wake to be completely blest.
I don't know who the carver was, but he was clearly very talented. Here are some other examples of his work from Newburyport:
Parsons stone), though the carving style is different (deeper, not as nuanced):