What were Christopher Columbus' children's names?

Christopher Columbus had two children (sons): Diego and Ferdinand Columbus.

He married Filipa Moniz Perestrelo, daughter of the Porto Santo governor and Portuguese nobleman of Lombard origin Bartolomeu Perestrello. In 1479 or 1480, his son Diego Columbus was born. Fernfinand was born in 1488 to another woman, Beatriz Enriquez de Arana.

Diego Columbus

Diego Columbus (Portuguese: Diogo Colombo; Spanish: Diego Colón; also, in Italian: Diego Colombo) (1479/80-1526) was a Portuguese navigator and explorer under the Kings of Castile and Aragón. He served as the 2nd Admiral of the Indies, 2nd Viceroy of the Indies and 4th Governor of the Indies as a vassal to the Kings of Castile and Aragón. He was the eldest son of Christopher Columbus and wife Filipa Moniz Perestrelo.

https://en.wikipedia.org/wiki/Diego_Columbus

Ferdinand Columbus

Ferdinand Columbus (Spanish: Fernando Colón also Hernando, Portuguese: Fernando Colombo, Italian: Fernando Colombo; 15 August? 1488–1539) was a Spanish bibliographer and cosmographer, the second son of Christopher Columbus. His mother was Beatriz Enriquez de Arana, whom his father never married, but who was Columbus' constant companion in later life.

https://en.wikipedia.org/wiki/Ferdinand_Columbus
http://columbus-day.123holiday.net/christopher_columbus_2.html