"Why are they making Mr. Greenspan Chatan Bereshit—what has he done for the synagogue?" (Glinert)

"The “Chatan Bereshit”, “Bridegroom of the (Beginning of the) Torah,” also a great honor, is called to the Torah with a similar introduction as that which introduced his fellow-chatan." (source)

"The time-honoured tradition of the Chatan Torah and Chatan Bereshit giving a kiddush on Shabbat Bereshit [the Shabbat on which Parashat Bereshit is read] echoes a custom from the Middle Ages when those two dignitaries would make a feast for the community." (source)

"Likewise, the Chatan Bereshit must be a young person who shines by his or her commitment and potential." (source)

"A resident of Eretz Yisrael spending Simchas Torah in the diaspora should not be honored with Chasan Torah or Chasan Bereishis." (source)

"Can a kohen be called up for chasan torah or chasan bereishis?" (source)