Thiruvalluvar the Divine Tamil Saint composer of Thirukkural

Thirukkural is one of the very important Tamil Literature works, a part of  Eighteen Lesser Texts, known as the Patiṉeṇkīḻkaṇakku tamil works belonging to 6th and 10th century CE.

The earliest commentary was written by Manakkudavar a Tamil Jain Scholar who found Kural as more a Vedic ethics books and not a Jain work.

Tamil is one of the surviving Classical languages and its Sangam Literature covers of deeds of Kings who lived between 200 BCE to 300CE, the present collection of Sangam Literature were composed between 200BCE to 700CE and edited in its present form as Eighteen Greater texts- it contains the Eight Anthologies (Ettuthokai) and the Ten Idylls (Pattupattu).  with additions such as God's Praise by songs of Bharatham paadiya Perunthevanar as first song during late 9th or early 10th century CE. 

Thirukkural is composed in Kural Venpa format, which is well developed form of Poetry which is found in few works of Paripadal, Kalithogai and Thirumurugatrupadai of Sangam Literatue which are dated to 7 or 8th century CE as they have lot of new Tamil words and literary well developed format and missing archaic form found in Purananuru etc., 

Tiruvalluva Maalai ( திருவள்ளுவ மாலை), literally 'Garland of Valluvar', is an anthology of ancient Tamil paeans containing fifty-five verses each written by different poets praising the ancient work of the Kural and its author Valluvar. The composing poets names are as similar to Sangam Literature poets, but lierary criticism find them haveing been composed between 11th 16th century.  The collection also reveals the name of the author of the Kural text as 'Valluvar' for the first time, as Valluvar himself composed the Kural text centuries earlier without indicating his name anywhere in his work. 

Thiruvalluva maalai songs give details of Number of chapters and division of Kural within its 3 major divisions, which confrims that Kural in its present form is completely preserved.

Thiruvalluva Malai authors most of them has said that Kural is a tamil work of Sanskrit  Vedas and Dharma Shastras such as Manusmruti. Kodhamanar, Mangudi Marudhanar, Aasiriyar Nallanthuvanar, Velliveedhiyar, Kaari Kannanar, Baratham Paadiya Perundevanar, Madurai Perumarudhanar, Seyalur Kodum Senkannanar, Vannakkan Saathanar, Kalathur Kilar, Ukkira Peruvaluthiyar all of these Poets 

Thiruvalluvar Temple in Mylapore is the oldest shrine for Thiruvalluvar, and was renovation works started in 1972 and a Old 14th century Statue of Valluvar was found there. 

http://www.varalaaru.com/design/article.aspx?ArticleID=539

நல்வழி 12th century Avvaiyar copmosed Nalvazi

வாழ்க்கைக்கு நல்வழி காட்டும் 41 வெண்பாக்களையுடைய நூல்,

கடவுள் வாழ்த்து

https://avvaiyaar-vaalviyal.blogspot.com/p/blog-page_9162.html

வெண்பா : 24
நீறில்லா நெற்றிபாழ்(;) நெய்யில்லா உண்டிபாழ்
ஆறில்லா ஊருக் (கு) அழகுபாழ் – மாறில்
உடன்பிறப் பில்லா உடம்புபாழ் (;) பாழே
மடக்கொடி இல்லா மனை

விளக்கம்: 
திருநீரோ, திருமண்ணோ இடாத நெற்றி வீணானதாகும்,
நெய்யில்லாமல் உண்ணும் உணவு வீணானதாகும்,
நீர் வளம் தரும் ஆறு இல்லாத ஊர் வீணானதாகும்,
ஒத்த கருத்து உடைய உடன்பிறப்பு இல்லாத உடம்பு வீணானதாகும், நல்ல குணங்கள் உள்ள மனைவி இல்லாத வீடு வீணானதாகும்,

The forehead, which without Vivuthi has left, is in vain;
Eating  food without ghee is wasteful,
A town without River flowing water is a waste,

Sibling with no similar sibling is futile, a house without a spouse with good qualities is futile,

வெண்பா :40
தேவர் குறளும் திருநான் மறைமுடிவும்
மூவர் தமிழும் முனிமொழியும் – கோவை
திருவா சகமும் திருமூலர் சொல்லும்
ஒருவா சகமென் றுணர்.

விளக்கம்:
தெய்வப் புலவர் திருவள்ளுவர் எழுதிய திருக்குறளும்,
நான்கு வேதத்தின் முடிவும், அப்பர், சம்பந்தர், திருநாவுக்கரசர் ஆகிய மூவர் பாடிய தேவாரமும், மாணிக்க வாசகர் பாடிய திருவாசகமும், திருக்கோவையும், திருமூலர் பாடிய திருமந்திரம் ஆகிய நூல்கள் சொல்லும் பொருள்கள் அனைத்தும் ஒன்று தான் என்று நீ உணர்ந்து கொள்.

Thirukkural by Divine Poet Thiruvalluvar

You realize that the conclusions of the four Vedas, the Devara, the three songs sung by the Upper, Sambandar and Thirunavukarasar, the Thiruvasakam, the Thirukovai and the Thirumanthram sung by the thriuvmular, are the same.