NO
Your sister's aunt (who is also your aunt) is the baby's great aunt. The baby is a great niece or great nephew of your sister's aunt.
Yes, he can. But he'd be marrying his step-aunt.
Your great niece or great nephew, and you his or her great aunt.
Not sure but i guess it would be your great aunt's daughter
If you are the named beneficiary then of course you can claim it!
I heard it was Kim Jong II's aunt, who was 1st cousins with James Deans nephew. It's her daughter's daughters son. Todd.
Technically, the baby would be your half-niece or half-nephew, and you would be their half-uncle or half-aunt. But many people dislike the term half or step (I have two stepsons and one natural son) and only for official purposes would I use the term half or step. So I'm with C3 Shooter on this, treat them as your nephew or niece.
Step Nephew
Yes, I will give the same graduation gift to nephew and a step nephew, even if they are not residing in the same house. Getting same gift will realise nephew that he is not superior and at the same time step nephew will also feel that he is not inferior in any manner.
Cody
The relationship of a stepbrother's son to someone would be that of a step-nephew. This is because the stepbrother is not biologically related to the person, but is a relative through marriage. Therefore, the stepbrother's son would be the person's step-nephew, as they are the child of the stepbrother.