Meaning and name origin
Lotty \l(ot)-ty\ as a girl's name is of Old German origin, and the meaning of Lotty is "free man". Lotty is a variant of Charlotte (Old German); French feminine diminutive of Charles: it was very common in the Middle Ages in France to make a pet form of a name by adding -ot on the end. Also a variant of Lottie: diminutive of Charlotte (French) "little and womanly".
Lotty is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the girl name Lotty and its variant forms. Popular variation forms ranked in the Top 1000/100 are Charlotte (#10), Lottie and Lotta. (2014 statistics).