Gosh Monica , you lot are certainly on the ball here!
Yes indeed John Brash was the son of David & Agnes, he was my GT GT Grandfather.. who certainly was in Portland Prison 1851 England census..for what heaven knows!!
This family have been quite a mixed up lot! John must have died in prison sometime after 1851 as he does not appear in 1861, and his wife Helen now a widow.
Their family was -- David H Brash 1845 Thomas Littlejohn Brash 1846. Helen Brash 1848. Johan Magdalene Brash 1850. Thomas was my Gt Grandfather, he was a headmaster in Hertfordshire and stole about £130 from school funds then vanished after 4 of 5 children died in the Camberwell workhouse.
My Grandfather was the survivor who was taken to Wales with Parents Thos & Catherine . I think (in fact-- gut sure) I have found them in 1891 under the name of Brown at Cardiff. There is no more trace of Thomas after 1891 as in 1901 Kate is a widow and my Grandfather in Devonshire in the Navy.. he never spoke of the incident, but there were rumours of all sorts went round the family---- finally forgotten until I began the family search..
I moved on to Thomas' sister's and brother, found Helen married , then spent most of her life in Chrichton Royal Mental Institution where she died in 1929 age 80. Johan never married & went to Glasgow working with the Church after leaving Hertfordshire just after 1891, she died in 1928 age79 in Glasgow ,but whatever happened to Thomas Littlejohn Brash & brother David H. remains a mystery..There you have it all, my big brick wall.
Many thank's Monica, and advice welcome,, regards Dolly.