Feel free to add more family members and to change spellings or variants.
LN:
DH:
DW:
DD:
DD:
DD:
DS:
DS:
DD:
Boys names:
Austell, Cadan, Corentyn, Costentyn,
Daveth,
Jago,
Jory,
Jowan, Jacca, Kitto, Kenver, Lowen,
Margh,
Myghal,
Merryn, Petroc,
Pasco,
Piran, Perran, Ruan, Ryol, Sennen, Talan, Taran, Treeve, Vyvyan, Yestin, Zennor
Girls names:
Anneth,
Caja, Clowance,
Demelza,
Elowen,
Eseld, Ebrel, Endellion,
Jennifer, Juliot,
Kerensa, Kensa, Kerra, Lamorna, Lowenna, Loveday,
Merryn,
Morwenna,
Meliora, Rosenwyn,
Steren, Senara,
Tamsin, Tegen, Tressa, Zennor, Zenoby
Last names:
Barnicoat, Chenoweth, Curnow, Jenner, Jenkins, Nancarrow, Penhaligon, Penrose, Rescorla, Rowe, Rosevear, Tremayne, Trevaskis,
Trevelyan, Trelawny