Are any of the Silent Hill Games related ? No Spoilers please

I was a huge fan of Silent Hill 1 + 2 but simply never got round to playing any of the others ... I was wondering if any of the games after 1+2 had connected storylines or characters ? (seeing as there are 8? games now ive found it hard to keep track of everything thats going on in the world of Silent Hill)

3 is a direct sequel to 1. Beyond that, there are some less obvious connections and thematic bonds but none of them can be said to be beyond-a-doubt connected. There is a very strong argument for 0rigin being in continuity with 1 and 3, a weaker one for 2 and 4, and beyond that who knows...this is a pretty loaded question because it's a major point of contention in the fanbase. Like a lot of things in Silent Hill, nothing's ever spelled out clearly.

I don't believe Silent Hill 4 started out as a Silent Hill game.

Silent Hill Origin was supposed to be a prequel, if that helps. When the town is just starting out. So you will see the girl Alessa, etc.