Oh, this is getting spooky now, what with the crazy Aunties in Spain, and now this... cos I have a similar thing in my family. Not quite so close at hand - it was cousins of my Gran, and the result was another cousin who became known as "poor Rose"! They lived on the Isle of Wight... maybe that explains it. ;-)
My Mum did also used to go out with her cousin Geoff (except they're something like second cousins twice removed, so it's not quite the same) when they were about sixteen.

Sounds like your lot are a bit odd in general. It does sound awful about your Dad's funeral. Your poor Mum!

God, relations are confusing!!