The word 'Calley' is a name; the appropriate pronoun, depending on context, would be I, me, you, he, him, she, or her. Examples:
Mr. Calley gave this to me, he is my math teacher.
Please tell Calley that there's a phone call for her.
Henry Calley was born in 1914.
Henry Calley died in 1997.
Calley McGrane was born in 1989.
William Calley is 5' 5".
George Calley has written: 'Collessie'
William Calley goes by Rusty.
William Calley was born on June 8, 1943.
William Calley was born on June 8, 1943.
Samuel Calley was born on 1821-04-13.
Samuel Calley died on 1883-01-01.
Thomas Charles Pleydell Calley died in 1932.
Thomas Charles Pleydell Calley was born in 1856.