Conversation so far:
what can you tell me about the Family relations?
After hinting for many years that Mystique was indeed Nightcrawler's biological mother, it was confirmed by writer Scott Lobdell in X-Men Unlimited #4.
how was it confirmed, what did he say?
it was confirmed by writer Scott Lobdell in X-Men Unlimited #4.

Question: what else did he find out about family?
Self-contained rewrite: what else did Scott Lobdell find out about family in the nightcrawler comics besides his mother?