Feminine first names of Earth are often used on Gor as slave names. Sometimes they are even given to slave girls of Gorean origin. They tend to excite masters, and often improve the girl's price. The origin of the custom is probably a simple one. Most girls brought to Gor are brought as slaves, It is thus natural that their original names be regarded as the names of slaves. Many Goreans, even those educated to the second knowledge, that afforded the higher castes, find it hard to believe that the delicious Earth women who show up in markets could possibly have been free on their native world. They are just too obviously marvellous slave meat. "If they were free, they should not have been," say many Goreans. "At any rate," they add, "they are now in the collar where they belong, and they will stay there!"
It is true, incidentally, that a girl of Earth origin is almost never freed on Gor. They are on the whole just too wonderful, too desirable, to free. Perhaps one would have to be insane to free such a woman. Would it not be madness to let such beauties, kneeling before you, out of your collar? A Gorean saying, of the second knowledge, has it that a steel collar locked on the throat of an Earth woman is perfect. If you should be a female, and are reading this, and should be so unfortunate as to be taken to Gor as a slave, do not hope for freedom; rather learn your lessons swiftly and well, and resign yourself to the service of masters; fight your collar, if you wish, but in the end it will do you no good, you are slave. Explorers of Gor page 290

“The name ‘Janice´, on Gor, is a slave name, isn´t it?” asked the girl.
“Yes,” I said. “Do you object?”
“No, Master,” she said. “I find that delicious, and wholly appropriate.”
She leaned to me, her hands tied behind her back, and kissed me, gently.
“Let us rest now, Slave Girl,” I said.
“Yes, Master,” she said. Explorers of Gor , chapter 34

Earth names are given to Gorean female slaves. They are almost uniformly regarded as suitable slave names. Similarly, girls who wear them are taken to be slaves. IT is sometimes amusing to Goreans when an Earth girl shows up in a Gorean market, insisting that her name is such and such, a name taken on Gor to be a slave name. It was though they were confessing to their bondage. She may be given a name afresh, but now to be worn as a slave name chosen by her master, or, sometimes, presumably that she may better understand her dependence on men’s will, and her subjection to male domination, she may be given another Earth-girl name. Mercenaries of Gor, page 323

"Her name is 'Candice', " I said, reading the cage card. "That is an Earth-girl name. Is she an Earth girl?"

"No," said my hostess. "She is from Tabor. We thought it a lovely name. We put it on her.

I nodded. It was a lovely name. If any girl were to appear on Gor with such a name, of course, she would be immediately taken to be a slave, and would be treated as such. She would soon be in a collar. Her fate would be bondage. Mercenaries of Gor, page 340

More often than they, for example, we would be put in earrings, which here is regarded, interestingly enough, as an almost consummate degradation of a woman. similarly, another indication of our status here is that, occasionally, one of our names, an Earth-girl name, would be bestowed on a girl of this world, as a punishment, usually a temporary one, indicating that she was now to be regarded as one of the lowest of the low. Dancer of Gor , chapter 5

… Four-three–seven, that is your capture name, and you will think of yourself only as that. You may not inquire as to the former names of others nor reveal to them, even of they should ask, your own. Similarly, you may not make inquiries pertaining to suck things as their families, stations and castes, nor reveal to others, even if asked any such information pertaining to you. You are merely, and simply,  the captive Four-three-seven. Mercenaries of Gor, page 135, 136

“'Ina',” I said, “that could be the name of a slave.” Such names, 'Ina', 'Ita', 'Tuka', 'Tula', 'Di', 'Lita' and such, are common slave names. They, and many such names, are worn by hundreds of women in bondage. Earth-girl names, such as 'Shirley', 'Linda', 'Jane,' and such, are also commonly used as slave names. One girl, of course, may, from time to time, have many different names, according to the whim of her master, or masters. She is a domestic animal, to be named as the master pleases.
“That is no slave,” said a fellow.
“No,” laughed another, perhaps ruefully.
“That is Ina, Lady of Ar,” said a man, “attached to the staff of Saphronicus, a political observer, said to be a confidant of, and to report to, the Lady Talena, of Ar, herself.” Vagabonds of Gor , page 98

She was in chains. Though the girl loves her master with all her heart and would never dream of fleeing from him, absurd though such a dream might be of Gor, given the branding, the collaring, the closeness of the society, and such, she knows that is is upon occasion to be put in chains. In this act is symbolized his desire of her, that she is worth chaining and keeping. And in this act is symbolized his power over her. Despite their love, she is still his slave. Renegades of Gor, page 359

The commonness of names is even more acute with slave names. For example, common slave names on Gor are Tuka, Lana, and Lita. There are probably hundreds of girls on Gor answering to those names, and others, almost as familiar, which are similarly luscious. Earth-girl names, incidentally, as is well known, are often used on Gor as slave names. Players of Gor, page 103

There are names, of course, which are common both to this world and my old world, which suggests interesting questions of etiology. Similarly there are some names on this world which are on free woman but which are also, often, found on slaves. One such is 'Dina'. It is not unusual fir a name on this world, incidentally, to be put on an Earth girl brought here. This is nor entirely, unnatural, of course, as such names are often beautiful, and naturally, more familiar to the masters. Witness of Gor, page 193

Gorean Slave Names