Who was the greatest Indian king?

Who was the greatest Indian king?
What are some of the famous real life romantic stories of Indian kings?
I will tell a very not so famous love story.

It is about King of Ayodhya Aja and princess Indumati.

Aja was Dasrath's father and Rama's grandfather.

Indumati was a beautiful princess. She was sister of King Bhoja of Vidarbha.

So when she comes of age her brother organizes a Swayamvar for her and invites all the kings and princes to attend it.

Invitation reached King Raghu of Ayodhya and he sends his son crown prince Aja. Exceedingly handsome Aja departs for Vidarbha. On the way he camps at the bank of a river where a wild elephant attacks the camp. Aja aims his arrow at the elephant's head but makes sure the arrow hits only enough to make it unconscious but not grievously injure it. The wild elephant happens to be a cursed Gandharv Priyamvad who gets freed from his curse by Aja's arrow. The freed Gandharv gifts Aja Sammohanstra. A weapon that will make all those who attack him in a battle stupefied. Such that they will not be seriously injured but will not be able to attack him either.

Eventually Aja reaches the Swayamavar. On that day princess Indumati accompanied by her chaperone is taken to each suitor. But of all of them Indumati chooses Aja.

While Aja is returning, the rejected suitors attack them to take away Indumati. But Aja uses Sammohanastra on them as he doesn't want to kill them and leaves.

After arriving in Ayodhya, King Raghu crowns him as king and retires. Sometime later Aja and Indumati have a son Dasrath.

One day when Indumati and Aja are strolling in the palace gardens Rishi Narad was passing by in the sky. A garland of parijat flowers from his hand falls down on indumati and she as a result dies

Grief stricken Aja raises his son Dasrathas a single parent till he is 8 years old. He does not remarry but choses to remain a celibate widower. Then when Dasrath has to go to gurukul for education he hands over his son to Rishi Vashisht to train him to be a good king and gives up his life to join Indumati.

The only love story I read where not a woman but a man gives up everything for his wife

Who is the most underrated king of ancient India?
According to me the most underrated king was Bindusar of maurya dynasty . He is son of Chandragupta Maurya. He is was one of great leader of Maurya dynasty . He has lost his mother during birth itself . When he was born his mother has been poisoned and then Chanakya had to kill his mother by surgery to save his child . He followed footsteps of father . He was been credited as great lords of that time as he annexed 16 Nobel kings that time . He maintained good relations with Greek kingdom and also patronised Buddhism. He was also credited for 40 temples at ruins of Sanchi . Chanakya himself gave administration in hand of bindusar and left to forest . As he is just known as Chandragupta son but not as a king who expanded his empire and made Maurya empire largest empire existing that time I feel he is underrated kings of ancient India .

Who was the greatest Indian king?
Indian history is certainly incomplete without all the great kings it has witnessed. So, the answer definitely should focus on, Who was one of the greatest Indian kings?

Shivaji Maharaj

Shivaji Bhosale, better known as Chhatrapati Shivaji Maharaj, was an Indian warrior king and a member of the Maratha clan. He established a competent and progressive civil rule with the help of disciplined military and well-structured administrative organisations.
He also introduced new military tactics, pioneering guerrilla warfare methods, which used geography, speed, and surprise and focused pinpoint attacks to defeat enemies.
Born on 19th February 1630 in the hill-fort of Shivneri, near the city of Junnar in Pune district, named Shivaji in honor of goddess Shivai to whom mother prayed for a healthy child.
Father Shahaji Bhosale was a Maratha general who served the Deccan Sultanates and mother Jijabai was the daughter of a ruler.
Shivaji was extremely devoted to his mother Jijabai, who was deeply religious. This religious environment had a great impact on Shivaji, and he carefully studied the two great Hindu epics, Ramayana and Mahabharata; these were to influence his lifelong defense of Hindu values. Throughout his life he was deeply interested in religious teachings, and regularly sought the company of Hindu and Sufi saints.
In 1646, Shivaji & his friends from Maval took oath of independence in the temple of Rohideshwar. At a young age of 16 he conquered the forts of Torna. Torna fort is the first fort that Shivaji captured.
In 1648, at the age of 18, captured two forts, Kondhana and Purandar.

1. The Killing of Afzal Khan:

The battle is known for the manner in which Afzal Khan was killed by Chhatrapati Shivaji. Shivaji had sent an emissary saying that he did not want war. Even though a meeting was arranged, both of them were deeply suspicious of each other’s intentions. It was agreed that the two would meet unarmed but both were prepared for treachery. Afzal Khan had hidden a small dagger (katyar) and Shivaji wore armour underneath his clothes with a tiger nails (wagh nakha) in one hand.

As the two men entered the tent, the 7' tall Khan embraced Shivaji. Then treacherous Khan swiftly drew his hidden dagger and stabbed Shivaji in the back. The dagger was deflected by Shivaji's armour. Shivaji responded by disemboweling the Khan with a single stroke of his wagh nakhi. Thereupon Afzal Khan's bodyguard Sayyed Banda attacked Shivaji with swords but Jiva Mahala, Shivaji's personal bodyguard fatally struck him down, cutting off one of Sayyed Banda's hands with a Dandpatta. Khan was later chased and beheaded by one of Shivaji’s lieutenants. The severed head was later sent to Rajgad to be shown to Shivaji’s mother.

1. Arrest in Agra and Wise Escape:

In 1666, Aurangzeb invited Shivaji to Agra, along with his nine-year-old son Sambhaji. Aurangzeb's plan was to send Shivaji to Kandahar (now in Afghanistan).Shivaji was led to the back of the hall. By now, it was clear that it was a trap and Shivaji and his son were captives. They were imprisoned for many months but, Shivaji did not despair. Shivaji’s was allocated spacious quarters in one of the big houses and his personal servants stayed in the interior of the haveli. He befriended the postmaster and a few subordinates of the emperor and collected information about the happenings around the kingdom.

Shivaji feigned illness and requested that his men be released so they go back home. Aurangzeb granted this wish. His men went to several towns and settled there, after which Shivaji was ready to execute his plan. Thereafter, on his request, he was allowed to send daily shipments of sweets and gifts to saints, fakirs, and temples in Agra as offerings for his health.

After several days and weeks of sending out boxes containing sweets, Shivaji, realizing his moment had arrived, escaped with his son Sambaji in the sweet baskets.