I can find two Philip and Ann Kaighins in the 1871 census.

RG10/5772: B-2-92-11-59
59 Carmodyl Moar (Mona House) Ballaugh
Philip Kaighin Head 26 Labourer - b. Castletown
Ann Kaighin Wife 28 - b. Andreas
Lenora Kaighin Daur 4 - b. Bride
Catharine I. Kaighin Daur 2 - b. Bride

RG10/5771: A-2a-94-2-9
9 Michael Rd, Kaighan's House German
Philip Kaighan Head 49 Farmer (of 69 acres employing 1 man) - b. German
Ann Kaighan Wife 59 - Ballaugh
Ann Kaighan Daur 24 - German
Catherine kelly Serv 18 - German

I'm guessing the first is your Philip.