Hey all,
I'm off the same family tree, just joining the party super late and replying to messages all over the internet :-)
I hadn't realised that Thomas Boocock remarried (I'm a descendant of his youngest daughter with his first wife, Elizabeth Briggs Boocock - I have a few photos of her as well). Just to make a point about when the family arrived in Liverpool (although I am guessing you have already worked most of this out by now): they were in Birkenhead in 1867, in Liverpool in 1871 living in Nelson Street (Tom is listed as John but it is the same man), and their youngest son, James Briggs Boocock, was born in 1873. You see him turn up on the 1881 census living with his elder brother, Thomas Briggs Boocock junior.
I had no idea there was a second marriage for Thomas senior! THis line keeps on throwing up more interesting facts every time I look at it!
I hope that this reaches you all in a shorter time frame than it took me to find it :-)
Gem