Yevamos11: 1
נוֹשְׂאִין עַל הָאֲנוּסָה וְעַל הַמְפֻתָּה. הָאוֹנֵס וְהַמְפַתֶּה עַל הַנְּשׂוּאָה — חַיָּב. נוֹשֵׂא אָדָם אֲנוּסַת אָבִיו וּמְפֻתַּת אָבִיו, אֲנוּסַת בְּנוֹ וּמְפֻתַּת בְּנוֹ. רַבִּי יְהוּדָה אוֹסֵר בַּאֲנוּסַת אָבִיו וּמְפֻתַּת אָבִיו.
A man may marry [the relatives of] the woman he raped or seduced. [If] he rapes or seduces [her relatives] after he married her, he is liable. A man may marry the woman raped or seduced by his father, or the woman raped or seduced by his son. R' Yehudah prohibits the woman raped or seduced by his father.
Yevamos11: 2
הַגִּיּוֹרֶת שֶׁנִּתְגַּיְּרוּ בָנֶיהָ עִמָּהּ — לֹא חוֹלְצִין וְלֹא מְיַבְּמִין, אֲפִלּוּ הוֹרָתוֹ שֶׁל רִאשׁוֹן שֶׁלֹּא בִקְדֻשָּׁה וְלֵדָתוֹ בִקְדֻשָּׁה, וְהַשֵּׁנִי הוֹרָתוֹ וְלֵדָתוֹ בִקְדֻשָּׁה. וְכֵן שִׁפְחָה שֶׁנִּשְׁתַּחְרְרוּ בָנֶיהָ עִמָּהּ.
[If] a woman's sons converted with her, they perform neither chalitzah nor yibum, even if the first was not conceived in sanctity but was born in sanctity, and the second was conceived and born in sanctity. So, too, [in the case of] a slavewoman whose sons were emancipated with her.