These individuals are the cousins of Leonard Hofstadter, Michael Hofstadter and their sister.

On one of Leonard's birthdays, Leonard came home from his cello lesson to find lots of strange cars parked out front and when he got to the door, he could hear people whispering and he could smell German chocolate cake which was his favorite, but it turned out his grandfather had died. Leonard said it felt a bit like a birthday-party because he got to see his cousins and there was cake.


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