is it possible to be related not via blood, but distantly via marriage?
If you really want to include the 'person' as part of your family tree, the term I would use is
'connected' via several marriages to the husband of your g g/aunt.
The definition you gave...
"5th cousin of wife of 2nd cousin 4x removed of husband of 2nd cousin of husband of great-grandaunt"...
clearly shows no 'relationship' to your family although there's a very remote 'connection' to the husband of your g g/aunt.
As an example, my maternal aunt married & her husband became my uncle (through marriage) & their children are my 1st cousins.
In no way am I 'related' through marriage to anyone else in my uncle's family no matter how close or distant to him...
He married my bloodline aunt (sister of my mother) & any relationship with him & his wider family ends there as nobody else in his family is 'related' to me via that marriage.
If I was talking to someone who knew my uncles' sister, I wouldn't say I was related to her because I'm not, not even through marriage.
To explain any 'connection' to my 'family', I'd say she was 'related' to my cousins as she's their aunt & no relation to me.
That's the best I can explain your very remote 'connection'.
Annie
