Black Names/

[potioncat]

No: HPFGUIDX 154280

 "Catlady (Rita Prince Winston)"  
> Oh, if Lucretia Black and Ignatius Prewett are the parents of 
Fabian,
> Gideon, and Molly Prewett, then Molly Weasley (nee Prewett) was
> Sirius's first cousin, not 'cousins by marriage'.

Potioncat:
I think it's more likely that Ignatius is Molly's uncle. That would 
make Sirius and Molly 'cousins by marriage'.

> Catlady
> Pollux Black born 1912 is shown as father of Walburga born 1925, 
when
> he was (by arithmetic) 13. Cygnus Black born 1938 is shown as father
> of Bellatrix born 1951, when he was (by arithmetic) 13. If this
> document is canonical and time-travel is not involved, all
> SexGod!Draco fanfics can be defended as merely continuing a Black
> family tradition of early sexual activity.

Potioncat:
While I think it's a great big error--or a series of errors--I've 
seen an essay that explains it. Sort of. I think it was linked in an 
earlier post within the past week.