Longshot Request.
I am trying to find (in a London orhanage) my 3x great grand father Francis William GREAD.
He was born 1853, his mother Catherine died 1856 and his father John remarried (Elizabeth) later that same year and had another son, Charles in 1857 but then John died in 1859.
So in 1859 Francis was an orphan and was not on the 1861 census with his stepmother Elizabeth or half brother Charles.
Family stories say that he went to an orphanage and his surname was changed.
What are the chances of finding out what happened to him in his early years prior to his arrival in NZ under his real name in 1874?

?
Can anyone help with records for orphanages?
Other surnames he could have used are CROCKER or MECKIFF or BUT(T)LER?
Any information would be greatly appreciated.