Don't get your hopes up, LP. I'm afraid this will only make things worse.
The first thing I found was a mention on Scottish Archive Network.http://126.96.36.199/catalogue/person.as ... 9456&st=1&
It refers to Sir Charles Halkett Bt. of Pitfirrane, who married Janet Murray, daughter of Sir Patrick Murray of Saltcoats
It also says that the family's legal advisor also married into the family. His name was McFarlane and he married Patrick's granddaughter Mary. A caption under a supposed portrait of Mrs McFarlane states that her grandfather was Sir Patrick Murray of Dryden
Then, in an old book "A History of the Tron Kirk of Edinburgh" there is this entry:
13th September 1699
(...) Sir Patrick Murray of Pitdinnes
and Dame Janet Murray Lady Pittfirren gets possession of the loft in the Tron Kirk (...)
Sir Patrick Murray of Pitdennis
(sic) was the second son of Sir William Murray of Clermont and Newton. His only child Janet (Lady Pitfirren) married Charles Halkett of Pitfirrane (...)
Sir Patrick Murray of Pitdinnes
is also mentioned in the Annals of Dunfermline where he succeeded his son-in-law as provost in 1697.
They all seem to be the same man.
I couldn't find any further mention of Saltcoats (including Saltcoats Castle). Maybe someone else is able to find the connection.
A friend is one who walks in when the rest of the world walks out.