The applicant shall state in the application his true name, county of birth, date of birth, the full name of parents as shown on birth certificate, the name he desires to adopt, his reasons for desiring such change, and whether his name has ever before been changed by law, and, if so, the facts with respect thereto. (1891, c. 145; Rev., s. 2147; C.S., s. 2972; 1945, c. 37, s. 1; 1957, c. 1233, s. 1.)