No, we don't know if Andromeda Tonks nee Black dies but Ted and Nymphadora Tonks do. Teddy Lupin, Nymphadora's son and last in that line survives. another line survives through Bellatrix Lestrange nee Black sister who married Lucius Malfoy and had Draco who in turn had a son, Scorpius.
Sirius Black wasn't technically related to Harry Potter. After Harry's parents died his only living relatives were the Dursley's who were still alive after Sirius died. Harry then created a family of his own with his wife Ginny Wealsey.
Yes. Sirius Black is Harry Potter's god father.
Yes. Sirius Black is Harry Potter's godfather in the series.
Sirius Black appeared in the 3rd, 4th, and 5th Harry Potter movies (Harry Potter and the Prisoner of Azkaban, Harry Potter and the Goblet of Fire, and Harry Potter and the Order of the Phoenix).
There is a House Elf and his name is Dobby.
Harry Potter has messy jet black hair.
Daniel Radcliffe(the actor who portrayed Harry Potter) did star in The Woman in Black.
Snape Harry, too. (His robes are black and so's his hair. That would count.)
In the room with the Black Family Tree
Harry will be related to Lucius Malfoy in some way, all pure-bloods are related and Harry's father was pure-blood. Indeed, the Malfoy's are related to the Black's who have a Potter in their family.
PATERNAL GRANDFATHER -- According to Harry Potter Wiki, it is possible that James Potter I's father and Harry Potter's paternal grandfather is Charlus Potter, a pure-blood wizard who married Dorea Black from the Black family. If not, we may identify him as the default Mr. Potter. PATERNAL GRANDMOTHER -- According to Harry Potter Wiki, it is possible that James Potter I's mother and Harry Potter's paternal grandmother is Dorea Potter (née Black), a pure-blood witch from the Black family who married pure-blood wizard Charlus Potter. If not, we may identify her as the default Mrs. Potter. MATERNAL GRANDFATHER -- There is no canonical proof about the first name of Lily Evans's father and Harry Potter's maternal grandfather, so we may identify him as the default Mr. Evans. MATERNAL GRANDMOTHER -- There is no canonical proof about the first name of Lily Evans's mother and Harry Potter's maternal grandmother, so we may identify her as the default Mrs. Evans.
No, Sirius is Harry's godfather. James Potter is Harry's father.