¿Que piensan de esta frase?

[Rusty]

Yes, that's the way I was thinking it might go, but I would say something different, like "Puede que mi padre los hubiera matado (a mis hermanos) después de irme de Toledo."

[Jonathan D.]

Rusty, thank you very much for all of your help!

At this point, I will go ahead and use what I have as I think it will be good enough for my first year Spanish class.

Thanks again!

~ Jonathan D.

[Rusty]

¡No hay de qué!

Wow! A first-year Spanish class that teaches the subjunctive mood. Wonderful!

[Jonathan D.]

Oh yeah Profesora B. is killing us... ultimately though, she is a very good instructor.

[AngelicaDeAlquezar]

For mere reasons of style I'd prefer "es posible que mi padre haya matado a mis hermanos después de que salí/me fui de Toledo".
"Matara" is not wrong, but to me, it leaves the possibility shorter than it "should" be after the incident.
"Después de que saliera de Toledo" would be ambiguous, as it may mean "after my father left Toledo", so a pronoun is needed there: "después de que yo saliera de Toledo". Still, the sentence may sound too long, so "salí" may make it flow more easily.