Assertion: dean's grandfather | /r/HasProperty | henry winchester
Facets:
Source sentences:
text: In 8.12 As Time Goes By, Sam and Dean learn about the Men of Letters when their grandfather, Henry Winchester, suddenly emerges in their motel room after time traveling from 1958.
text: Around this time, Sam and Dean encounter their time-traveling paternal grandfather Henry Winchester and discover that through him, they are the legacies to an extinct secret society of compilers of supernatural information and artifacts known as the Men of Letters.