Calvin Wallace was born in 1965.
There was Calvin O'keefe and Charles Wallace. Charles Wallace is Meg's younger brother and Calvin O'keefe is the boy with orange hair.
I think that Calvin is asked to go on the journey with Megan and Charles Wallace because it is her father and she is going to become the future.
At the end of A Wrinkle in Time, Charles Wallace is freed, and the three Murrys and Calvin return home.
not one of us
Calvin was born in 1963
Calvin Fowler was born in 1940.
Calvin Blocker was born in 1955.
Calvin Mokoto was born in 1988.
Calvin Newton was born in 1929.
Calvin Mooers was born in 1919.
Calvin Demarest was born in 1886.
Calvin Collins was born in 1974.