Title: Niketa Thopia
Content:  Niketa Thopia (Niketa Topia, Nicetas Thopia; 1388 – d. 1415) was the Lord of Krujë between 1392—1394 and 1403—1415. He was a member of the Thopia family and the son of Karl Topia, the Prince of Albania (r. 1368–1388).
Title: Niketa Thopia
Content:  III in 1407 and had a daughter Jelena, named after her grandmother Jelena Balsha. Balsha III and Niketa entered an alliance in order to drive out the Venetians. Niketa then started to be a mediator betweenBalsha and Venetians during the First Scutari War. At the end of 1411, Niketa Thopia suffered a heavy defeat from the forces of Teodor III Muzaka during one skirmish. He himself was held prisoner and with the intervention of the Ragusan Republic was released, but only after conceding some territories around the Shkumbin river to the Muzaka family. Upon his death in 1415, the castle of Krujë fell into Ottomans' hands. He married the daughter of Komnen Arianiti.
Title: Niketa Thopia
Content:  Niketa was the son of Karl Topia. His mother is unknown. Upon Karl Topia's death (1388), Marco Barbarigo inherited Krujë through his marriage with Helena, Niketa's older sister; Niketa's older brother Gjergj succeeded as Lord of Durazzo. Niketa held a territory south of Durazzo. After the death of Bayezid (1402), many Albanian lords recognised Venetian suzerainty, such as Niketa, Gjon Kastrioti and Koja Zaharija. The Venetians were interested in having some buffer zone between them and the advancing Ottoman army. In 1403, Niketa Thopia managed to capture the city of Krujë from his sister, Helena Thopia, thus gaining another part of the territory previously held by the Thopia family. His daughter Mara married 
Title: Andrea Thopia
Content:  Andrea Thopia was the nephew of Karl Thopia. He had two sons Karl Muzaka and Komnin. He was son of Nikete Topia died 1414/1415
Title: Helena Thopia
Content:  Princess Helena Thopia was the eldest daughter of Karl Thopia and Voisava Balsha. Her first marriage was to Marco Barbarigo, a Venetian nobleman. After the death of her father, in 1388, she inherited the castle of Krujë and the surrounding region. In 1392 as a result of the hostilities between her husband and the Venetian forces, her half-brother, Niketa Thopia, a Venice loyal, attacked the city of Krujë and forced them to find refuge among the Balšić family. In 1394, Konstantin Balšić, who was appointed by the Ottomans to govern Krujë, married her. Konstantin ruled as an Ottoman vassal and was killed in 1402. In 1403 Niketa Thopia captured the castle from Helena. After Konstantin's death Helena and their son Stefan first went to Venice and then lived with her sister Maria.
Title: Thopia family
Content:  After the death of Karl, his dominion was divided between his daughter Helena Thopia and his son Gjergj Thopia. Gjergj kept the city of Durrës and his surroundings which he later surrendered to Venice Republic, while Helen Thopia kept the city of Krujë and its surroundings. She was married to Venetian nobleman Marco Barbarigo. The count Niketa Thopia, a cousin of Gjergj, ruled in the region south of Durrës. In 1403, Niketa Thopia managed to capture the city of Krujë from his cousin Helena, thus gaining another part of the territory previously held by Thopia. He had good relations with Venice which was interested in having some buffer zone between them and advancing Ottoman army. However, in 1411, Niketa Thopia suffered a heavy defeat from the forces of Teodor III Muzaka. He himself fell prisoner and with the intervention of Ragusan Republic he was released, but only after giving some territories around Shkumbin river to Muzaka family. Upon his death in 1415, the castle of Krujë fell to the Ottomans.
Title: Sergios Niketiates
Content:  Sergios Niketiates is an obscure and "enigmatic" (Cyril Mango) figure, known only through brief references in two hagiographic works, the Acts of Saints David, Symeon and George and the Synaxarium Constantinopolitanum. According to these, Sergios was born in the village of Niketia, near Amastris in Paphlagonia, whence his surname. He was a close relative, possibly the uncle, of Empress Theodora, the wife of Emperor Theophilos (r. 829–842) and mother of Michael III (r. 842–867). Under Theophilos, he became one of the leading members of the Byzantine Senate, reaching the supreme court rank of magistros. Seals attributed to him also record him having progressively advanced through the levels of hypatos, anthypatos, protospatharios and patrikios, and having held the office of General Logothete or Logothete of the 
Title: Nicetas the Patrician
Content:  Nicetas was born in Paphlagonia in 761/62, and his parents were probably named Gregory and Anna. Later tradition held that he was a descendant of Empress Theodora, the wife of Theophilos ((r. 829 – 842)). This is clearly impossible, but some sort of relation cannot be excluded. Another tradition records that he was also a relative of Empress Irene of Athens ((r. 797 – 802)).  According to his hagiography, he was castrated by his parents at a young age, received a good education and was sent to Constantinople at age 17 (c. 778), where he entered the service of the imperial court. According to the same source, Nicetas distinguished himself among the court eunuchs and came to the attention 
Title: Niketas (son of Ioube)
Content:  Niketas (Νικήτας), the son of Ioube, was a Byzantine officer of Arab origin who served as the governor (strategos) of the Cibyrrhaeot Theme in ca. 912. Niketas is only mentioned by the De Administrando Imperio, a work compiled in the middle of the 10th century by Constantine VII Porphyrogennetos. According to it, he was the son of Ioube (Ἰούβη, a Hellenized form of Ayyub). Along with his older brother Chase (Hasan) he was a slave of the patrikios Damian, the parakoimomenos of Emperor Michael III, implying that they had been captured as prisoners of war during a conflict with the Arabs around the middle of the 9th century or shortly after. It is 
Title: Karl Thopia
Content: Gjergj Thopia (fl. 1388–d. 1392), Lord of Durrës (Durazzo), married Teodora Branković ; Helena Thopia (fl. 1388–1403), married Venetian count Marco Barbadigo (first marriage) and lord Konstantin Balšić (second marriage) ; Voisava Thopia, married N. Cursachio (first marriage) and in 1394, Progon Dukagjini, Lord of Lezhë and uncle of Pal Dukagjini (second marriage) Maria Thopia, married Filippo di Maramonte ; Niketa Thopia, married a daughter of Komnen Arianiti. ; Mara, married Balša III in 1407 (divorced by 1412). Karl married Vojislava Balšić, in c. undefined 1370. The pair had four children:  Karl had two more children but the parentage is unknown: 

Question: Who is the father of Niketa Thopia?
Answer: Karl Topia.