IGI has:

Ewan KILLEY s/o Nicholas KILLEY & Mary KNEAL chr 06 Sep 1801, Maughold, IOM

Nicholas KILLEY m Mary KNEALE 29 Nov 1800, Maughold, IOM

Maughold MIs have:

#X10
In the memory of EVAN KILLEY of the Barony in this parish, died Aug 6th 1874 aged 73 years.

#X9
In the memory of MARY JANE KILLEY who died May 13th 18.. [1883] aged 35 years also JAMES THOM.. son of JAMES KILLEY who died Sep 19th 1884 aged 5 years.

#X11
In memory of EVAN KILLEY who died Oct 17th 1870 aged 20 years also MARGARET KILLEY who died June 26th 1881 aged 22 years.

#X12
In loving memory of JOHN ROBERT KILLEY who died at Rhenabb, Maughold, June 11th 1898 aged 53 years. Gone but not forgotten. Also MARGARET wife of the above who died January 6th 1906 aged 69 years.

#J34
In loving memory of FREDERICK WILLIAM KILLEY, Blacksmith, who died at Ballellin 9th March 1934 aged 61 years, and his beloved wife ELIZABETH CHRISTIAN who died 2nd May 1950 aged 74 years. For ever with the Lord.

#W47
In memory of JOHN KILLEY who died Nov 23 1843 aged 45 years

#W48
MONA T. KILLEY died Sep 28th 18777 aged 2 years.

#W49
In memory of JOHN KILLEY who died in the year 1861 aged 41 years

#W45 B...KILLEY

#W46 M.K.

Maughold BRs (1861- ) have:

KILLEY, Ann 63 yrs Ramsey 23/7/1902
KILLEY, Arthur 2yrs 6 mth Ramsey 1/10/1888
KILLEY, Catherine 74 yrs Maughold 15/2/1915
KILLEY, James 57 yrs Ramsey 8/5/1908
KILLEY, James 42 yrs Maughold 2/4/1893
KILLEY, James Thomas 5 yrs Maughold, 21/9/1884
KILLEY, Jane 81 years, Ramsey 11/4/1909
KILLEY, John 64 yrs Ramsey 25/5/1901
KILLEY, Isabella 76 yrs Maughold 31/7/1903
KILLEY, Margaret 75 yrs Maughold 25/12/1894
KILLEY, Mary 60 yrs Ramsey 23/5/1895
KILLEY, Mary 7yrs, Ramsey 12/8/ 1888
KILLEY, Mary Ann 73 yrs ramsey 23/3/1924
KILLEY, Sarah 73 yrs kirk Michael 24/1/1924
KILLEY, William 50 yrs ramsey 30/11/1910

KILLEY, Elizabeth Christian 74 yrs Ballaterson 5/5/1950
KILLEY, Frederick William 61 yrs Bellellin 11/3/1934

also

Nicholas KILLEY Barony Sep 19 1821
Mary KILLEY Barony aged 82 May 28 1845

1841 Census for Maughold has:
#3 20 82 Barroney

GILL (sic) Ewan 41 farmer IOM
GILL Mary 75 IOM
GILL William 39 IOM
GILL Robert 36 IOM (KILLEY Robt s/o Nicholas & Margt KNEALE chr

30 Nov 1806, Maughold)
GILL Jane 20 IOM
GILL Mary 4 IOM
GILL William 2 IOM

(i.e. GILL should be KILLEY)