2 added 668 characters in body
source | link

I did not find any detail on Sudarshana but I did stumble across this information regarding a different brother of Agastya hence sharing it. Shrimad Bhagvatam Chapter 4 Verse 1.36 mentions the following about the birth of Agastya:

enter image description here

TEXT 1.36

pulastyo 'janayat patnyām
agastyam ca havirbhuvi so
'nya-janmani dahrāgnir
viśravāś ca mahā-tapāh

pulastyaḥ - the sage Pulastya; ajanayat - begot; patnyām - in his wife; agastyam - the great sage Agastya; ca - also; havirbhuvi - in Havirbhū; sah - he (Agastya); anya-janmani - in the next birth; dahra-agniḥ - the digesting fire; visravāḥ - Viśravā; ca- and; mahā-tapāḥ - greatly powerful because of austerity.

TRANSLATION

Pulastya begot in his wife, Havirbhū, one son of the name Agastya, who in his next birth became Dahrāgni. Besides him, Pulastya begot another very great and saintly son, whose name was Viśravā.

The Vishnu Puran Chapter X also mentions him being born to Pulatsya which would again testify to his kinship with Vishrava:

The wife of Angiras, Smriti, bore daughters named Siniválí, Kuhu, Ráká, and Anumati (phases of the moon). Anasúyá, the wife of Atri, was the mother of three sinless sons, Soma (the moon), Durvásas, and the ascetic Dattátreya. Pulastya had, by Príti, a son called in a former birth, or in the Swáyambhuva Manwantara, Dattoli, who is now known as the sage Agastya.

It may be possible that the rishi mentioned in Rama's meeting with Agastya's brother could actually be Vishravas who BTW was his enemy's father and the omission of his name may actually be intentional!

I did not find any detail on Sudarshana but I did stumble across this information regarding a different brother of Agastya hence sharing it. Shrimad Bhagvatam Chapter 4 Verse 1.36 mentions the following about the birth of Agastya:

enter image description here

The Vishnu Puran Chapter X also mentions him being born to Pulatsya which would again testify to his kinship with Vishrava:

The wife of Angiras, Smriti, bore daughters named Siniválí, Kuhu, Ráká, and Anumati (phases of the moon). Anasúyá, the wife of Atri, was the mother of three sinless sons, Soma (the moon), Durvásas, and the ascetic Dattátreya. Pulastya had, by Príti, a son called in a former birth, or in the Swáyambhuva Manwantara, Dattoli, who is now known as the sage Agastya.

It may be possible that the rishi mentioned in Rama's meeting with Agastya's brother could actually be Vishravas who BTW was his enemy's father and the omission of his name may actually be intentional!

I did not find any detail on Sudarshana but I did stumble across this information regarding a different brother of Agastya hence sharing it. Shrimad Bhagvatam Chapter 4 Verse 1.36 mentions the following about the birth of Agastya:

TEXT 1.36

pulastyo 'janayat patnyām
agastyam ca havirbhuvi so
'nya-janmani dahrāgnir
viśravāś ca mahā-tapāh

pulastyaḥ - the sage Pulastya; ajanayat - begot; patnyām - in his wife; agastyam - the great sage Agastya; ca - also; havirbhuvi - in Havirbhū; sah - he (Agastya); anya-janmani - in the next birth; dahra-agniḥ - the digesting fire; visravāḥ - Viśravā; ca- and; mahā-tapāḥ - greatly powerful because of austerity.

TRANSLATION

Pulastya begot in his wife, Havirbhū, one son of the name Agastya, who in his next birth became Dahrāgni. Besides him, Pulastya begot another very great and saintly son, whose name was Viśravā.

The Vishnu Puran Chapter X also mentions him being born to Pulatsya which would again testify to his kinship with Vishrava:

The wife of Angiras, Smriti, bore daughters named Siniválí, Kuhu, Ráká, and Anumati (phases of the moon). Anasúyá, the wife of Atri, was the mother of three sinless sons, Soma (the moon), Durvásas, and the ascetic Dattátreya. Pulastya had, by Príti, a son called in a former birth, or in the Swáyambhuva Manwantara, Dattoli, who is now known as the sage Agastya.

It may be possible that the rishi mentioned in Rama's meeting with Agastya's brother could actually be Vishravas who BTW was his enemy's father and the omission of his name may actually be intentional!

1
source | link

I did not find any detail on Sudarshana but I did stumble across this information regarding a different brother of Agastya hence sharing it. Shrimad Bhagvatam Chapter 4 Verse 1.36 mentions the following about the birth of Agastya:

enter image description here

The Vishnu Puran Chapter X also mentions him being born to Pulatsya which would again testify to his kinship with Vishrava:

The wife of Angiras, Smriti, bore daughters named Siniválí, Kuhu, Ráká, and Anumati (phases of the moon). Anasúyá, the wife of Atri, was the mother of three sinless sons, Soma (the moon), Durvásas, and the ascetic Dattátreya. Pulastya had, by Príti, a son called in a former birth, or in the Swáyambhuva Manwantara, Dattoli, who is now known as the sage Agastya.

It may be possible that the rishi mentioned in Rama's meeting with Agastya's brother could actually be Vishravas who BTW was his enemy's father and the omission of his name may actually be intentional!