These Men first appeared in the Shire almost immediately after Frodo's departure; we don't have an exact date, but they seem to have arrived in late September or early October III 3018. They were originally under the control of Lotho Sackville-Baggins, and did not truly become 'Sharkey'sMen' until the appearance of Sharkey (that is, Saruman) in the Shire about a year later, on 22 SeptemberIII 3019.