I read this on MSN about a Father-to-Son sperm donation:
This couple, and extended family, seems to have all the right intentions in this situation. I find it hard to believe there will be confusion as to who the “real” parent is. In the same way an adopted child knows who his parents are this child will know who his dad is and who his grandpa and those roles probably won’t be confused.
This is a tricky situation but hopefully it will work out for everyone involved.