Is Mark Evans being protected by Mrs. Figgs and Mundungus?

[vmonte]

No: HPFGUIDX 88408

Many fans believe that Mark Evans will probably begin Hogwarts in 
book 6. 
If this is true...
Why does Mark Evans live in the same town as Harry? 
Is it just a coincidence that this character lives in the same town 
as Petunia's family? (A magical child with the last name of Evans--
the maiden name of Lily and Petunia?) Is this child a distant 
relative of Petunia or Lily? 

Did Petunia have two children? One with magical powers that she gave 
up? Is this why she puts up with Harry because DD is protecting her 
other child? (If Dumbledore is protecting Mark it would make sense 
that DD would want both children living in the same area so that Mrs. 
Figgs and Mundungus could keep an eye on both.) 

Is this child Snape's son in foster care (or perhaps Mark lives alone 
with his mother)?  Is DD protecting this child for Snape? Is that why 
Snape can be trusted?

Also, I wonder what month this child was born on?  And is the 
prophecy really refering to three children (Harry, Neville, and Mark) 
when it says "born to those that have thrice defied him?" 
 
If the prophecy refers to three children Harry was marked literally
(and emotionally), Neville was marked emotionally, and Mark...in name 
(HAHA)?