Somebody years ago asked me to look out for this pair of brothers, but I can't remember who! While transcribing the Grahamstown Journal for 1855 today, I came across the death announcement for Edward, which said that he was a native of Brentford. This set me searching in the London Metropolitan Archive records and I have found his baptism (though not that of his younger brother Gad), but I have also found some information on their parents. Their father was another Gad, son of a London bargeman George Jeffreys, and their mother was Mary Ann Watts. I am assuming that James Watts of Howard's Party was Mary Ann's brother. I have found a possible baptism for him but there were quite a few Watts in London and so I cannot be sure. I have added what I found today to the Extra Info section of eggsa http://www.eggsa.org/1820-settlers/index.php/additional-information/j-surnames/1904-jefferies-edward-george-extra-data If anyone has any more definite information based on primary sources, let me know Sue