In John 4:46-47, a nobleman goes to Jesus in Galilee and begs Him to heal his son who is near death (NKJV):
So Jesus came again to Cana of Galilee where He had made the water wine. And there was a certain nobleman whose son was sick at Capernaum.
When he heard that Jesus had come out of Judea into Galilee, he went to Him and implored Him to come down and heal his son, for he was at the point of death.
What prompted him to do this? There were no healings earlier. The first miracle in the area was turning the water to wine in a wedding feast. His healing ministry hadn't really started yet.
Update/Resolved: Yet there were miracles earlier. They were noted briefly in John 2:23, just in time for Nicodemus to mention them and the nobleman to hear of them.