I'll try harder with your PDF!
The MIs I have, I've taken from the booklet West Lothian MI volume 2 - Kirkliston - I think it was in the library of the Aberdeen & North East of Scotland Family History Society (I'm a member). Uphall was either in the same book or another in the same series.
MI Kirkliston #54 : "(fallen on face by 2006) Hugh Borthwick died 9-4-1834 age 77 [sic 72?], son George died 2-4-1867 age 77 [76] (wife Janet Cuthbertson died 20-4-1863 age 82, son James 7-2-1826 age 11, dau Janet 11-1-1869 age 46 (husband Alexr Irvine)). Hugh Borthwick died 10-11-1889 age 77 [sic - 87?], wife Mary Haston died 14-3-1874 age 62, son John died 22-5-1881 age 40. (west face) by Hugh Borthwick in memory of father George Borthwick died 29-6-1814 age 85, mother Isabel Strachan died 21-8-1786 age 65, wife Margaret Brash died 16-3-1828 age 59. 1821."
In similar/same volume, MI Uphall #84 records that Jane Spiers Brash died 26-12-1847 in 34th year, hence born abt 1814; hus William Dick died 11-10-1887 age 82, hence born abt 1805. MI Uphall #85 is the MI for John Dick & Janet Smellie.
I haven't followed through this David Brash / Margaret Easton, having established they're, at best, a distant collateral line.
Am I right in assuming from your original post that you're descended from Margaret Brash & Alexander Cunningham? Again, given my assigned parentage for Margaret, because they're also quite a distant collateral line albeit closer, I've only got minimal information - see attached.
There is one timely candidate for Margaret Brash's father John Brash: born 27 Mar 1726 Shillinghill, Abercorn to George Brash & Agnes Nicol. This George Brash is s/o George Brash & Margaret Meikle. I'm sure this couple have been discussed before in Rootschat. Jean Richie is also recorded as Jean Richison; I haven't a note of her parentage; they married 5 May 1749 Abercorn. There is another John Brash who could conceivably just about be the father (born 15 Aug 1731 Newtoun, Abercorn) but that would depend on when Jean Richie was born, and I haven't followed that up.
The LDS IGI and Patron Submissions do have a good deal of information, some good, some bad, and you can search ScotlandsPeople Indexes for free - that can be hugely useful because you can search on parents as well as children.
Hope that helps. This topic is possibly now better placed on the West Lothian list - unless of course you're following up the Leith-based Brashes.