I can totally understand how you are feeling Lea -as I have mentioned before we had a known donor who we trusted, but then things went sour when he changed, or maybe we just came to know him a bit better.

The issue of multiple donor children came up then too, and realistically we had no way of knowing exactly how many there currently were, other than trusting what he was telling us, let alone how many potential children there may be in the future. We discussed it and came up with a rationale that providing there is education of our children then they will be a bit protected in a way, of what might happen if they were to meet a half sibling. This donors idea was to get all the mums to meet like a clan for a picnic a few times a year, which if there were 5 mums wouldn't stress me out, but 50 or more becomes a bit weird.

I think that realistically everyone has the potential to have unknown siblings - not that i am implying in any way that everyone does, it is just more magnified in our smaller community where couples are dependent on only a few donors to achieve success.

Just for the record we have now opted for donor sperm through a clinic - the risk of multiple siblings still exists, but there is no risk of interference from the donor, which we potentially faced with the donor we had chosen earlier.

Good luck