Marriages Dec 1860
Lewin Isabella W. Derby 8b 702
Kermeen James W. Derby 8b 702

Is this your Isabella KERMEEN in the 1881 Census ? if it is, you can follow her in the 1891 and 1901 Census,

1881 Census, Isle of Man,

Isabella KERMEEN Head W Female 45 Conchan, Isle of Man, England Grocer
John KERMEEN Son U Male 17 England Gardeners Boy (Dom)
Robert KERMEEN Son U Male 11 England Scholar
Mary J. KERMEEN Daur Female 8 England Scholar

Dwelling Village
Census Place Onchan, Isle of Man, Isle of Man
Public Records Office Reference RG11
Piece / Folio 5602 / 50
Page Number 19

Births Dec 1863
KERMEEN John William W. Derby 8b 297

Births Dec 1869
KERMEEN Robert James W. Derby 8b 250

Births Jun 1873
KERMEEN Mary Isabella W. Derby 8b 210

Deaths Dec 1877
Kermeen James 39 W. Derby 8b 194

hope this helps,
Averil