There are variations in spelling both George and Agnes's surnames in the records.
Brian's website, birth registrations:
CONNAN, Alfred, 28 Jul 1878, (Ref) Rus 21, (Father) CONNAN, George, (Mother) CUBBIN, Agnes.
CONNAN, James Henry 29 Dec 1880 Rus 388 CONNAN, George CUBBIN, Agnes.
CONNON, Mary Ann 29 Apr 1883 Rus 175 CONNON, George CUBBIN, Agnes.
CONNON, Agnes Eleanor 1 Dec 1888 Rus 407 CONNON, George CUBBON, Agnes.
CANNON, Amy Maud 18 Jul 1891 Dou 295 CANNON, George CUBBON, Agnes.

1881 census:
George CANNON Head M Male 27 Castletown, Isle of Man, Farm Laborer
Agnes CANNON Wife M Female 30 Douglas, Isle of Man
Isabella J. CANNON Daur Female 7 Malew, Isle of Man, Scholar
Alfred CANNON Son Male 2 Rushen, Isle of Man
James H. CANNON Son Male 3 m Rushen, Isle of Man
Source Information:
Dwelling Ballacorkish, Census Place Rushen, Isle of Man, Family History Library Film 1342347, PRO Reference RG11, Piece / Folio 5608 / 94, p.24.

Burials (Brian's website):
CANNAN, George 85 Mal 16 May 1939
CONNAN, Agnes 45 Mal 1 Nov 1896

IGI has:
GEORGE CONNON Christening: 24 AUG 1853 Saint Marys, Castletown, Isle Of Man, Father: JAMES CONNON, Mother: ISABELLA.
AGNES CUBBON Christening: 17 OCT 1850 Saint Barnabas, Douglas, Isle Of Man, Father: JAMES CUBBON, Mother: ANN.
ISABELLA JANE CONNON Christening:15 MAR 1874 Malew, Isle Of Man, Father: GEORGE CONNON, Mother: AGNES CUBBON.

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