You said.
It turns out that Margaret Hutchin had in fact married John Looney b. 1 May 1738 Maughold, d. 1804, Maughold.

The Jon Looney b.1738 was buried in 1741
IOMFHS Burials CD Looney, Jon 15 September 1741 (a child)

Wm Looney married, Margaret Corkill 15 June 1735.
Children.
1734 Daniel Corkill 24th Nov Wm Looney & Margt Corkill.
1735 Peter Looney 12th Feb Fil : Wm & Margt.
1738 Jon Looney 1st. May Fil : Wm & Margt burial, 15th Sep 1741 (a child).
1739 Margt Looney 10th August Fil : Wm & Margt.
1743 Isabel Looney 2nd Oct burial, 12th Dec 1814.
1746 Joney Looney 20 April Wm Looney & Margt Corkill.
1747 Daniel Looney 8th Aug.
1747 William Looney 8th Aug burial, 12th Sep 1747 (infant) of Wm Looney.
Twins of Wm Looney had private Baptism.
Daniel received into ye Church 20th Sep 1747.
1750 Robert Looney 23 Dec burial, 16 May 1754.
1754 William Looney 28 April.

Averil