Hi Donna
Thanks for looking and sorry for the delay in replying
I will have to get a look at Isabels will
further to her birth which would have been about 1740 (age 73 at death in 1813)
the nearest I can find on Frances CD IS IN 1738 in Kirk Michael to Richard McBooy and Alice Curghey
The entry for her marriage 20/5/1760 in K/M Frances has made a note that it took place in German
It is logged in the Kirk German records as 20/05/1760 Willam Garrett k/m Isabel McBooy this Parish
I couldn't find a birth entry in K/G for her

Many thanks again
Lesley