Look at the picture. The numbers refer to why i said that this relationship is not possible and the yellow line means we alrady found this person, so we don't have to search anymore!
1) since Norma and Drake are not related, they can't be the same person.
2) If Bradley is related to Drake then he would be related to Norma- but they can't coz we know that they're not related! So Bradley and Norma are not related, and they can't be the same person
3) Kermit is a year older than Bradley - so they can't be the same person
4) let's look at the genders: Norma is female, and since Atley and Cursen are related, and Cursen is Atley's brother, then she must be Atley!!!
So we have one name: Norma Atley
Now, Drake must be the other woman: Marlene
5) - the only possibility we have left for Kermit now is Cursen! (since it can't be Bradly)
and we're left with Bradley Leonard!!!