My apologies, Frances.

I can find only 4 marriages of a John Looney between 1750 – 1780.
There are 2 marriages of a John Looney to a spouse named Margaret in Maughold.

Marriage, John Looney and Margaret Hutchin 18 January 1777.
Marriage, John Looney and Margaret Christian 17th Aug 1780.

The other 2 marriages are.
John Looney Married: Mary Quackyn 13 June 1752 Malew.
John Looney Married: Ellinor Moore 9 August 1768 Santon.

Averil