These are the baptisms on the Maughold parish register:
QUAYLE Edward, [son of] Philip Quayle/ Mary Parish Church 7 Jul 1849
QUAYLE James, Philip Quayle/ Mary Corkill Parish Church 12 Jan 1840
QUAYLE Philip, Philip Quayle/ Mary Corkill Parish Church 20 Mar 1842
QUAYLE Mary Ann, Philip Quayle/ Mary Corkill Parish Church 12 Oct 1844
QUAYLE Agnes, Philip Quayle/ Mary Corkill Parish Church 10 Jan 1847
QUAYLE Benjamin, Philip Quayle/ Mary Corkill Parish Church 16 May 1853
QUAYLE Robert, Philip Quayle/ Mary Corkill Parish Church 10 Dec 1854 twin of Alexander,
QUAYLE Alexander, Philip Quayle/ Mary Corkill Parish Church 10 Dec 1854 twin of Robert
QUAYLE Emily, Philip Quayle/ Mary Corkill Parish Church 25 Jul 1858
QUAYLE John, Philip Quayle/ Mary Corkill Parish Church 10 Jun 1860.

This could be her brother Philip's marriage in the Maughold register:
23 Sep 1866

Philip QUAYLE, Full age, Bachelor, Tailor, [residence] Ramsey, [father] Philip Quayle, Coachman, to

Sarah CURPHEY, Full age, Spinster, [residence] Ramsey, [father] Joseph Curphey, Labourer.

Mary Ann Quayle doesn't appear to have married in Maughold [but Ramsey is a possibility].

There is a will in Brian Lawson's index which might be Mary Corkill's, and would be worth a look at a LDS Family History Centre to see whether children's married names are given:
QUAYLE, Mary 1878 Ram E 31 0106486.

Sue