Question: Kavi Kalash (died March 1689 CE, Tulapur) was an Indian Brahmin from Kanauj, a poet, and friend and personal advisor to which Maratha king, that was the eldest son of Chhatrapati Shivaji Maharaj, the founder of Maratha Empire and his first wife Maharani Saibai?

Context paragraphs:
Maynak Bhandari: Maynak Bhandari was one of the first chiefs or Admiral of the Maratha Navy under Chhatrapati Shivaji Maharaj, and helped in both building the Maratha Navy and safeguarding the coastline of the emerging Maratha Empire.  Under his leadership, Maratha navy won the battle at Khanderi fort near Alibaug.  He was belong to the Bhandari caste.  Along with Daria Sarang, another admiral who served Maharaj, Bhandari commanded a naval fleet of 200 ships.  Their official titles of Mai Nayak Bhandari and Daria Sarang translate to Water Leader and Sea Captain, respectively.  The Maratha Navy was the forerunner of India's present-day Coast Guard.  A memorial has been built to Ram Nayak Bhandari at Bhatye Village, close to Ratnagiri town.

Sambhaji: Sambhaji Bhosale (May 14, 1657 – March 11, 1689) was the eldest son of Chhatrapati Shivaji Maharaj, the founder of Maratha Empire and his first wife Maharani Saibai.  He was successor of the realm after his father's death.  Sambhaji's rule was largely shaped by the ongoing wars between the Maratha kingdom and Mughal Empire as well as other neighbouring powers such as the Siddis, Mysore and the Portuguese in Goa.  He ruled for 9 years.  Sambhaji was captured, tortured and executed by the Mughals, and succeeded by his brother Rajaram Chhatrapati.

Mai Nayak Bhandari: Ram Nayak was a Bhandari caste admiral in the navy of Chhatrapati Shivaji Maharaj, and helped to lead the formation of the Maratha Empire.  Along with Daria Sarang, another admiral who served Maharaj, Bhandari commanded a naval fleet of 200 ships.  Their official titles of Mai Nayak Bhandari and Daria Sarang translate to Water Leader and Sea Captain, respectively.  The Maratha Navy was the forerunner of India's present-day Coast Guard.  A memorial has been built to Ram Nayak Bhandari at Bhatye Village, close to Ratnagiri town.

Battle of Pratapgarh: The Battle of Pratapgad was a land battle fought on November 10, 1659 at the fort of Pratapgad near the town of Satara, Maharashtra, India between the forces of the Maratha king Chhatrapati Shivaji Maharaj and the Adilshahi general Afzal Khan.  The Marathas defeated the Adilshahi forces despite being outnumbered.  It was their first significant military victory against a major regional power, and led to the eventual establishment of the Maratha Empire.

Kavi Kalash: Kavi Kalash (died March 1689 CE, Tulapur) was an Indian Brahmin from Kanauj, a poet, and friend and personal advisor to Maratha king Sambhaji (reigned 1680-1689).  Though liked by his king, Kavi Kalash was widely disliked by the Maratha aristocracy, who called him "Kalusha" - "instigator of strife".

Sai Bhosale: Sai Bhosale ("née" Sai Nimbalkar) ( 1633 – 5 September 1659) was the first wife and chief consort of Chhatrapati Shivaji Maharaj, the founder of the Maratha Empire.  She was the mother of her husband's successor and the second Chhatrapati, Sambhaji.

Chhatrapati Shivaji Terminus railway station: Chhatrapati Shivaji Maharaj Terminus (CSMT) formerly known as Victoria Terminus is a historic railway station and a UNESCO World Heritage Site in Mumbai, Maharashtra, India which serves as the headquarters of the Central Railways.  The station has been designed by Frederick William Stevens according to the concept of Victorian Italianate Gothic Revival architecture and meant to be a similar revival of Indian Goth (classical era) architecture.  The station was built in 1887 in the Bori Bunder area of Mumbai to commemorate the Golden Jubilee of Queen Victoria.  The new railway station has been built where the Bori Bunder railway station once stood.  It is one of the busiest railway stations in India, serving as a terminal for both long-distance trains and commuter trains.  The station's name was changed from Victoria Terminus (with code BB) to  Chhatrapati Shivaji Terminus  (woth code CSTM) in March 1996 in honour of Emperor Chhatrapati Shivaji, founder of the Maratha Empire.  In 2017, the station was again renamed  Chhatrapati Shivaji Maharaj Terminus  (with code CSMT).

New Palace, Kolhapur: New Palace, Kolhapur is a palace situated in Kolhapur, in the Indian state of Maharastra.  It was constructed between 1877–1884.  Being an excellent specimen of architecture built in black polished stone, it has been an attraction for tourists.  It has extensive premises with a garden, fountain and wrestling ground.  The whole building is eight-angled and has a tower in the middle.  The clock on it was fixed in 1877.  At separate distances there are small towers.  On every glass are painted the events in Shivaji's life.  There is a zoo and a ground lake.  Even today, it is the residence of Chhatrapati Shahu, the direct descendent of Chhatrapati Shivaji Maharaj, the founder of Maratha Empire.

Shivaji: Shivaji Bhonsle (] ; c. 1627/1630 – 3 April 1680), also known as Chhatrapati Shivaji Maharaj, was an Indian warrior king and a member of the Bhonsle Maratha clan.  Shivaji carved out an enclave from the declining Adilshahi sultanate of Bijapur that formed the genesis of the Maratha Empire.  In 1674, he was formally crowned as the Chhatrapati (Monarch) of his realm at Raigad.

Shivaji Road: Shivaji Road or Chhatrapati Shivaji Maharaj is a road in Pune, Maharashtra.  This road is named after great Maratha Emperor Chhatrapati Shivaji Maharaj and is also called as Shivaji road in short.

Supporting paragraphs: Kavi Kalash Sambhaji
Answer: Sambhaji Bhosale