Smyrna Notes 2:8

"To the angel of the church in Smyrna write:"

Polycarp was most likely the pastor of the church in Smyrna at this time.
Polycarp was one of John's disciples and would have been placed in charge of a church.
We do know that Polycarp was the pastor of the church in Smyrna when he was martyred in 156 AD.
You can read the actual ancient account of the martydom of Polycarp written by an eyewitness called

Concerning the Martyrdom of the Holy Polycarp