Queen Sitre or Tia-Sitre ("Daughter of Re") was the Great Royal Wife

Great Royal Wife

Great Royal Wife or Chief King's Wife is the term used to refer to the chief wife of the pharaoh of Ancient Egypt. While most Ancient Egyptians were monogamous, the pharaoh would have had other, lesser wives and concubines in addition to the Great Royal Wife...

 of Pharaoh

Pharaoh

Pharaoh is a title used in many modern discussions of the ancient Egyptian rulers of all periods. The title originates in the term "pr-aa" which means "great house" and describes the royal palace...

 Ramesses I

Ramesses I

Menpehtyre Ramesses I was the founding Pharaoh of Ancient Egypt's 19th dynasty. The dates for his short reign are not completely known but the time-line of late 1292-1290 BC is frequently cited as well as 1295-1294 BC...

 of Egypt

Egypt

Egypt , officially the Arab Republic of Egypt, Arabic: , is a country mainly in North Africa, with the Sinai Peninsula forming a land bridge in Southwest Asia. Egypt is thus a transcontinental country, and a major power in Africa, the Mediterranean Basin, the Middle East and the Muslim world...

 and mother of Seti I

Seti I

Menmaatre Seti I was a Pharaoh of Ancient Egypt , the son of Ramesses I and Queen Sitre, and the father of Ramesses II...

.

There is some debate around the identity of Ramesses' wife and Seti's mother. The Year 400 Stela, found in Tanis

Tanis

Tanis was the capital of the 21st and 22nd dynasties of ancient Egypt, and is now an archaeological temple site. The word Tanis can also refer to:*Tanis, a little girl mummy in Scooby-Doo and the Ghoul School...

 and dated to the reign of Sitre's grandson Ramesses II

Ramesses II

Ramesses II , referred to as Ramesses the Great, was the third Egyptian pharaoh of the Nineteenth dynasty. He is often regarded as the greatest, most celebrated, and most powerful pharaoh of the Egyptian Empire...

 describes Seti as the son of Paramessu (the name of Ramesses I before he became pharaoh) and Tia. Also, Seti's daughter was named Tia. Sitre is shown together with Ramesses I and Seti in Seti's Abydos

Abydos, Egypt

Abydos is one of the most ancient cities of Upper Egypt, and also of the eight Upper Nome, of which it was the capital city. It is located about 11 kilometres west of the Nile at latitude 26° 10' N, near the modern Egyptian towns of el-'Araba el Madfuna and al-Balyana...

 temple, and she is called the King's Great Wife both here and in Seti's tomb (where one would expect her to be mentioned as King's Mother). However, Sitre's tomb, which can stylistically be dated to this period, mentions its owner as a King's Mother. It can be assumed that Tia and Sitre are the same person and that she altered her name when her husband became pharaoh, just like he changed his name from Paramessu to Ramesses. The fact that one of the daughters of Ramesses II was named Tia-Sitre makes it even more likely. She was Hatshepsut's nurse maid and was buried with her.

The absence of the title King's Daughter for her indicates that Sitre was of non-royal descent.

She was buried in a tomb in the Valley of the Queens

Valley of the Queens

The Valley of the Queens is a place in Egypt where wives of Pharaohs were buried in ancient times. In ancient times, it was known as Ta-Set-Neferu, meaning –‘the place of the Children of the Pharaoh’, because along with the Queens of the 18th, 19th and 20th dynasties many princes and princesses...

 (QV38). The decoration was unfinished, consisting of just line drawings.