John Rogers was one of the earliest settlers of Billerica, arriving in 1659. His son, John Rogers Jr. was a nearby neighbor of Thomas and Martha Carrier, when they lived in northern Billerica from the mid-1670s to -80s. About a month after Martha Carrier, now living in Andover, was accused of witchcraft and imprisoned, John Rogers Jr. was summoned to Salem to appear as a witness against her. A second summons, directed to the constable of Billerica, arrived at the end of July, commanding Rogers “to be and personally appear at the Court of Oyer and Terminer on Tuesday next at 10 o’clock in the morning, there to testify the truth … on certain indictments against Martha Carrier…”