You said,
and we have lost the connection between the Bwoaillee Losht and Yack families. Is all that right?

I say,
The jury is still out on this one -
I am still working on identifying the - William Looney in the Bwoaillee Losht Agreement

In his Will in 1742 William Looney – (son of, John Looney & Esther Christian als Tear)

Bequeathed to his Eldest Sister Christian Looney : all
his whole right & Title to the parcell of land called ye Booley Loist in KK Maughold:

ht tp://www.iomfhs.im/lawsons/LawsonBMD/twill/1742_036.html

Andrew Crebbin's wife is Christian Crebbin als Looney, daughter of John Looney [Will 1728] ht tp://lawsonsiom.freevar.com/wills/1728_025.html

with this William Looney it makes another Looney family living at Bwoaellie Lohst in 1748

here is the Bwoaillee Losht Agreement,

North Side Sales
Maughold (45)
Andrew Crebbin & Wm.
Looney an Agreement

Whereas there Has Been a dispute Bettwen Andrew Crebin,
and Wm. Looney, of the Parish of KK Maughold, Concerning
a Croft Commonly Known, by the name of Crottie Bollelost,
they have this day Unanimously agreed upon, by both parties
that Andrew Crebin with the Consente of his wife Christian Crebin
Als Looney doth give and surrender, unto Wm. Looney the forth part
of ye north Croft Called Bollelost, in & upon side, Length ways from,
from ye [rowings] Croft, to ye other part of ye said Croft, dureing
the foresd. William Looney naturall life ^ & his wifes ^ and then after their decease to
Return to the Issue yt shall become Heires, to ye Rest of ye Lands
[ye] the said Andrew Crebin, & his wife doth Enjoy at present, He
the said Wm. Looney paying, all the Honrble., Lords Rente as shall
be proportioned on by ye Setting quest with all Boons suits &
belonging to his own Part or proportion
secondly it is agreed upon that yt the said Andrew & his wife, doth allow, ye sd.
Wm. Looney, to have one halfe of ye Crop of ye whole Premises for
this present year, he ye foresd. Wm. Looney Excluding himself of all the
Right yt he has or may have to any part of ye said Lands belonging
to him or his, and for the true and faithfull performance of all ye
Singular Both parties, doth bind & oblidge themselves in the Penallty
and forfeiture of twenty Pounds sterling, this one halfe to the Hon :
Lord, of this Isle & other halfe to ye Party Greived, in testimony hereof
they hereunto sett their Marks to their Names this second day of Octber 1747
Wm Looney my x

Testes
Patt Cermeen my x Andrew Crebin my x
Patt : Christian Christian Crebin my x

2nd April 1748
The Subscribing witnesses Patt Cermeen and Patrick Christian made
Oath that the above Deed of Agreement
was duly executed and perfected
in their presence by William Looney And
Andrew Crebin acknowledged the same
to be his Act and Deed before me
Dan Mylrea

At a Sheading Court holden at
Douglas the 9th May 1748

The within Deed of Agreement being proved
and acknowledged before the Deemster and now
Openly published in Court, and no objection offered agt. it,
Is therefore allowed of and Confirmed according to Law
Dan Mylrea .
Jon Taubman Joh Quayle
Wm Christian