**DISCLAIMER I'm not doing this to rant about how inbred the clans are, I'm fully aware of that and honestly don't care, I'm just doing this for fun cause you know what, the more you know
**
I decided to choose Bramblestar just for the heck of it. These are strictly by blood only- not including uncles, aunts, nieces, nephews, in-laws and such. Also for some, there were more than one ways they are related- like being 4th cousins and also 2nd cousins, but I chose the one that is more closely related. The only cats I mentioned are the members in ThunderClan who are alive right now.
Bramblestar is the…
- Father of Alderheart and Sparkpelt
- First cousin of Brackenfur, Brightheart, and Thornclaw
- First cousin once removed of Poppyfrost, Cinderheart, Snowbush, Ambermoon, Dewnose, Lilyheart, and Graystripe
- First cousin twice removed of Cherryfall, Molewhisker, Hollytuft, Fernsong, Sorrelstripe, Larkkit, Leafkit, and Honeykit
- Second cousin of Squirrelflight and Leafpool
- Second cousin once removed of Jayfeather, Birchfall, and Lionblaze
- Second cousin twice removed of Whitewing and Rosepetal
- Second cousin three times removed of Ivypool and Dovewing
- Third cousin of Blossomfall, Bumblestripe, and Briarlight
Not related to by blood:
- Cloudtail
- Berrynose
- Mousewhisker
- Stormcloud
- Daisy
- Purdy
- Millie
So yeah, I found it interesting that currently, Bramblestar is related to every single ThunderClan cat by blood unless they're loners or kittypets who joined the clan.