Hello June
The L.S. parish record has no birth / marriage of Samuel Hilson. You most likely know the christenings of children William Eliz, John, Ann, Thomas between 1801 - 1809.
As David said there is a family in Pertenhall, John & Mary Hilson with children Mary, George, Hannah, Ann, Eliz between 1803 - 1811.
There are no Hilsons in neighbouring Eaton Socon, Keysoe, Swineshead.
As to Turvey, there are Samuel Hilson & Ann; Thomas Hilson & Fra(nces) ne Tysoe; John Hilson & Joyce ne Lightfoot.
Sorry no clues as to origin of Samuel/Martha.
regards John