Rama Dynasty and fore fathers

Ramayana's Dynasty
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Lord Brahma created 10 prajapatis — one of whom was Marichi.
Kashyapa is the son of Marichi and Kala.Kashyapa is regarded as the father of humanity.

Vivasvan or Surya is the son of Kashyapa and Aditi.
Manu or Vaivaswatha Manu is the son of Vivasvan. He is regarded as the first ruler belonging to the Ikshvaku dynasty.
Ikshvaku is the son of Manu and established his kingdom in Ayodhya.
Kukshi is the son of Ikshavaku.
Vikukshi is the son of Kukshi.
Bana is the son of Vikukshi.
Anaranya is the son of Bana.
Prithu is the son of Anaranya.
Trisanku is the son of Prithu.
Dhundhumara is the son of Trisanku.
Yuvanaswa is the son of Dhundhumara.
Mandhata is the son of Yuvanaswa.
Susandhi is the son of Mandhata.
Daivasandhi and Presenjit are the sons of Susandhi.
Bharatha is the son of Presenjit.
Asita is the son of Bharatha.
Sagara is the son of Asitha.
Asamanja is the son of Sagara.
Amsumantha (Ansuman) is the son of Asamanja.
Dileepa is the son of Amsumantha.
Bhagiratha is the son of Dileepa. (The River Ganga is also called Bhagirathi because it is Sage Bhagiratha who sent her to the earth and Lord Shiva broke her ego by controlling her entire flow in his head through his hair locks ( Jadai ). And so she is also called Shivani.)
Kakustha is the son of Bhagiratha.
Raghu is the son of Kakushta. (The clan of Raghuvamsha started with Raghu.)
Pravardha is the son of Raghu.
Sankhana is the son of Pravardha.
Sudarsana is the son of Sankhana.
Agnivarna is the son of Sudarsana.
Seeghraga is the son of Agnivarna.
Maru is the son of Seeghraga.
Prasusruka is the son of Maru.
Ambarisha is the son of Prasusruka.
Nahusha is the son of Ambarisha.
Yayathi is the son of Nahusha.
Nabhaga is the son of Yayathi.
Aja is the son of Nabhaga.

Dasaratha is the son of Aja.

Rama, Lakshmana, Bharatha and Shatrughana are the sons of Dasaratha.

Lava and Kusha are the sons of Rama.