Sirius' motivation for breaking with his family

[Hagrid]

No: HPFGUIDX 154173

> Gerry wrote: <SNIP>
> Quite probably he liked his Uncle Ted and his aunt
> Andromeda as well, despite his mother telling him how inferior they
> were. These things give children an incentive to start thinking for
> themselves <SNIP>
> 
> Carol responds: <SNIP>
> Sirius's favorite cousin was Andromeda, as he tells Harry in "The 
Most
> Noble and Ancient House of Black" in OoP. Andromeda, the sister of
> Bellatrix Lestrange and Narcissa Malfoy, is Sirius Black's first
> cousin, not his aunt. Nymphadora Tonks is Sirius's first cousin 
once
> removed (if it matters)--one generation apart from him on the
> genealogical charts. She is also considerably younger <SNIP> 
> 
> At any rate, he does seem to have liked his cousin Andromeda, but I
> don't think we can theorize about his relationship with his 
Muggleborn
> cousin-in-law Ted Tonks as there's no evidence one way or the 
other.
> All we know about him is that he's "a right old slob," according to
> his daughter. <SNIP> But he would have seen little
> of Tonks as a child, considering that she was about fourteen years
> younger than he was 

AUSSIE:

Would another little bit of Lexicon sleuthing help. Alphard was 
close enough to Sirius to give gold to him after he left the family. 
Did that mean he approved and may have even encouraged the change?

Alphard was the younger brother of Walburga (1925 - 1985), Sirius's 
Mother. Walburga was in the same uear at hogwarts as McGonagall, and 
2 years ahead of a promising young wizard, Tom Riddle.

We are not told Alphard's year of birth, but we are told there is 
another younger sibling, Cygnus (1938 - 1992), dad of Bellatrix(DE), 
Andromeda (Tonk's mama) and Narcissa (Draco's mummy). So Cygnus 
missed Riddle by 1 year. Therefore, Alphard being the middle child 
was around Tom's, Myrtle's or maybe Hagrid's year.

How does this add to theories?

- Would have seen Riddle's gang in action in the Slytherin Common 
room and their treatment of younger kids.
- Financially supported Sirius when he made a move away from 
Riddle/LV 's activities.
- No word of family for him ... but, SHIRLEY TEMPLE married a man 
called BLACK and she was born 1928. 
- CoIncidence? Dang, but I hope so. LOL