questions about HP (Evans?)

[KIM MACKLIN]

No: HPFGUIDX 82339

Hi, I'm new to the list, from Western PA, 37 and Love HP.  Anyway.  while browsing the digest today I saw a post asking about the Evan's and where they all are.  
 
On Page 13 OoP it reads "So who've you been beating up tonight? Harry asked, his grin fading.  Another ten-year-old?  I know you did Mark Evans two nights ago--"
 
I think this may be an important.  You know how JKR slips things in and they are very hard to find.  There seem to be many neighbors in the Privet Drive area who live double lives,  or seem to be hiding.  I know it has been said Harry has no living relatives, but that does not seem logical.  Also, if this Mark Evans is 10 years old now, he should be 11 for the next book.  Who knows, maybe he will show up at Hogwarts?
 
I didn't come up with this on my own, I read it somewhere but cant remember where.  Anyway, any thoughts on this?
 
KIM


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