Date of Birth: 9 November 1847.
Jacob was born the younger Frye twin, to a schoolmaster and his young wife, both Assassins. His mother Cecily died giving birth.
In 1868 Jacob and Evie successfully wrested London from the Templars under the command of Crawford Starrick.
After continuing their struggle to help London's underclasses for a few years, the twins separated.
Jacob remained in the city to maintain control over the gangs, and reinforce the London Assassins with new initiates gathered from among the many orphans and child labourers.
Evie chose to follow Henry Green and join the Indian Assassins.
Around 1870 Jacob is believed to have travelled to India with a few of his young intiates to train with his Indian 'brothers and sisters' for a brief period. He brought back some of their fearsome battle tactics a year later.
In 1888, London was cowering in the shadow of Jack the Ripper's Terror.
Jacob disappeared at the end of October 1888, soon after the double-murder of Elizabeth Stride and Catherine Eddowes, and is presumed dead.