Genealogy as class

Inspired by this post.

From the Liber Floridus, I believe

When you level up instead of choosing your next template choose one of your adjacent relatives and either follow in their footsteps or blaze your own path.

 

When you Follow In Someones Footsteps choose one of their classes/templates and gain it, up to the maximum number of templates they have (if your grandfather has 3 templates of fighter they could not give you the fourth template), then recount a fond memory of them.

When you Blaze Your Own Path choose one of their templates and gain a template opposed to it (gain a cleric template if they were a vampire for example), then recount a foul memory of them.

 

A relative is adjacent if they are one of your parents, siblings, or children (excluding your own children), when you select a relative while leveling up all of their adjacent relatives become adjacent to you.

 

Example

Made using Family Echo

Starting off as a level 1 character you can choose your mother, father, or sibling to gain a template from, lets say you choose your mother for your first level up. 

When you finally reach level 2 you can still choose your father or sibling but you can also choose your aunt, maternal grandmother, or maternal grandfather, you decide to choose your aunt.

At 3rd level you can choose your father, sibling, maternal grandmother, maternal grandfather, uncle, or cousin, you go with your sibling.

At 4th level you can choose your father, maternal grandmother, maternal grandfather, uncle, cousin, nibling, or sibling-in-law, you decide your final choice will be your nibling. 

 

You can also gain templates from people not related to you (by blood or marriage) like found family or a mentor as long as you had a deep personal connection to them (or the person you gained a template from had a personal connection to them).