Is it Shim or Chim...? The Cheongsong Shim Clan

The character 'Shim' (심) is the character 沈, which means to sink or submerge, used when saying 'chim' (침) in 'chim-mol-hada' (to sink).
However, it has also been used as the surname Shim, and in China, since ancient times,
the Shim clan was composed of royalty or nobility.
Therefore, it is easy to understand them as a naturalized Chinese surname,
but it is highly likely that the Korean Shim clan is indigenous.
This is because there is no evidence of naturalization or connection to China.
The population is approximately 250,000.
The progenitor is Shim Hong-bu, a military official during the Goryeo Dynasty. He had two sons through his third-generation descendant, Shim Yong;
he raised the eldest son as a military official and the younger son as a civil official.
The eldest son, Shim Deok-bu, was the number three figure at the end of the Goryeo Dynasty, following Choe Yeong and Yi Seong-gye.
Jeong Do-jeon and Yi Seong-gye desperately needed Shim Deok-bu, who did not take sides.
They showed their sincerity by giving Yi Seong-gye's daughter to him as a daughter-in-law.
And finally, the Joseon Dynasty was founded.
The fates of the two brothers diverged here.
Shim Deok-bu became a meritorious founder of the new dynasty and a high-ranking state minister.
His younger brother, Shim Won-bu, remained a loyal subject of Goryeo, one of the Five Sages,
and it is said he never left Dumundong.
The Five Sages include Mogeun Yi Saek, Poeun Jeong Mong-ju, etc., and Shim Won-bu is the 'Yak-eun' (Medicinal Sage) Shim Won-bu.
Shim Won-bu left a will for his sons, telling them to go down to their ancestral lands and
to farm instead of seeking government office in Joseon.
His children and family all retired to the Cheongsong area in Gyeongsang-do.
And they honored Shim Won-bu's will.
Do you know the Songso House in Cheongsong?
Shim Won-bu's descendants became wealthy landowners through farming and land reclamation projects;
for ten generations, they were 'Manseokgun' (wealthy landlords) who fed the local people, performed good deeds, and practiced patriotism.
In Gyeongsang-do, it is one of the wealthiest families after the 12th generation Choi family.
It was said that the descendants of Shim Deok-bu, who lived in Kaesong and Hanyang, were the 'Main House,'
while the descendants of Shim Won-bu, who lived in Cheongsong village, were the 'Branch House.'
In fact, it is said that although Shim Won-bu's descendants studied as scholars, they refused to take the civil service examinations.
If you, reading this, are a member of the Cheongsong Shim clan,
are you a descendant of Deok-bu? Or a descendant of Won-bu?
If you are curious, give me 500 won and I will find out for you.