So if i go of this rule...
Isabel 19 march 1798 (Middlestotes) 1st daughter named after mother's mother
John 2 Aug 1800 (Middlestotes) 1st son named after father's father
Christian 22 Sept 1802 (Reedyloch) 2nd daughter named after father's mother
George 16 DEC 1805 (Blackadder town) My Family Line... 2ND son named after mother's father
Mary 28 Oct 1808 (Blackadder town) 3rd daughter named after mother
Margaret 24 Jan 1811 (Blackadder town) ??
Elizabeth 21 may 1814 (Sheriffhall) ??
Elizabeth Fords mother should be Isabel??
James Father
should be the John you have found (hopefully )
John's wife should be Christian?
and Isabel's husband George Ford?
So George and Isabel Ford may be parents of Elizabeth Ford
and John and Christian Anderson may be parents of James Anderson?
Using those presumptions i have been searching for a few years to no avail
In the 1841 census i found a George Ford in Whitsome Berwickshire that was 75 with a family but not a wife? next nearest female was 50 this may be him?
I also found a John Anderson in Jedburgh Roxburghshire aged 75 again no wife but with family.
As for religion i think the family that came to Australia stated that they were Presbyterian? so i am not sure if the previous generations were also..
One other thing to note was that George met his Wife Sarah in Selkirk and married 23/7/1830.
So between the birth of Elizabeth Anderson in 1814 at Sheriff hall and George Marrying Sarah in 1830 i am not sure of their location, and if George was the only one to move to Selkirk or his whole family did??
Thanks again, if anyone has any ideas?