where can i find out facts about my area, which is called simshill?

Simshill is a district in Glasgow, Scotland. Since I didn't find much on the Internet about it (except about Simshill Primary School's decreased enrollment), I suggest you go to your local library for information.

need help on mahogany tree

I recall that it got its name from Syme's Hill. It is a drumlin formed by the ice sheet that covered Scotland in the last ice age. Look at google earth too.