Aside from these details, Skeres is an elusive figure historically. He was once in the service of the Earl of Essex. He was arrested along with others involved in Essex' rebellion in 1601, and nothing is known of him beyond that date.
Skeres became Shakespeare's point man for contact with other conspirators, and Shakespeare often considered Skeres an unwelcome visitor. Skeres put Shakespeare in contact with Ingram Frizer, who murdered several people Shakespeare considered security risks.
Skeres lived to see the plot come to fruition under Cecil's son Robert and took part in the popular uprising which expelled the Spaniards and restored Queen Elizabeth to the throne. In gratitude, Elizabeth knighted Skeres.