Trewhellas Rules Burnetts Williams Darlingstones of Cornwall

I am researching the following families:

Noe VERDON (1847, Quebec)
Emma Jane TREWHELLA (1860, Cornwall)

Emma's parents:
John TREWHELLA (1835, Camborne, Cornwall)
Jemima Burnet RULE (1837, Chacewater, Kenwyn, Cornwall)

John's parents:
Matthew TREWHELLA (1806, possibly Redruth, Cornwall)
Sally WILLIAMS (1809, Phillack, Cornwall)
Matthew's parents were William TREWHEELA (1770 Redruth) & Elizabeth HOCKIN married in Illogan 1791.

Jemima's parents:
John RULE (1806, Possibly Gwennap, Cornwall)
Elizabeth BURNETT (1810 Kenwyn (Gwennap), Cornwall, England)

Sally's parents:
John WILLIAMS (abt 1774, possibly in Breage, Cornwall, England)
Sally RUSSELL (1787, Phillack, Cornwall)

Elizabeth's parents:
Charles BURNETT (1777, Gwennap, Cornwall, England)
Elizabeth DARLINGSTONE(1778, Gwennap, Cornwall, England)
Charles & Elizabeth married at Kenwyn

Charles' parents:
Charles BURNETT (Gwennap)
Loveday HART (Gwennap)