Hint on Origin of Sebastien's Name

Here is a hint to help figure out the origin of Sebastien's name.

One of Harry's most favourite things in the world was to wave at and visit the Number 10 bus - the city bus which passes our house roughly every 20 minutes to half an hour each day. It started when Harry and I would sit at the front window and watch for Daddy to come off the bus in the evening. Eventually, he could just sense the bus coming and before we could even see it he would be pointing to the front window to go and look. Sure enough, we'd go and there would be the bus turning onto our street off Evanson Street, two blocks east of us. He would bounce in my arms and wave at the bus. The bus loop where the bus turns around is also just two blocks away, in Aubrey Park - so when we were at the park, and a bus pulled into the bus turn around loop Harry would point to the bus and want to go and check it out. The bus drivers were always nice enough to let us come onto the bus and look around. Harry just loved that.

All of Harry's last summer we spent many afternoons sitting on our bench on our front porch and Harry would bounce and wave each time the bus came buy. It got so the drivers knew to look to our house and wave at the little boy sitting on his front stoop on the corner, or riding on the sidewalk on his trike (with his Mum dragging his IV pole / feeding pump and managing not to catch his feeding tube on anything). One of the ways we passed the long days in the hospital when Harry was going through chemotherapy was to sit and look out his window and wave at every bus that passed by. Even in his last few weeks, when he got sicker and sicker and weaker and weaker and was mostly just sleeping in my arms, I'd sit outside on the bench with Harry for hours and he would sleep, but when he heard the bus, even his last days, he would wake up and sit up and wave to the bus.

So, knowing how much he loved the bus, and specifically the number 10 bus, can you now guess at the meaning / relationship to Sebastien's name (and why we are spelling it sebastien not sebastian).

Love,
Cynthia