Oakclan, the self-proclaimed pioneers of usage and reproduction of twoleg technology, was the second clan to be founded, and was the first clan to be founded after the twoleg war and extinction.
In Year 2, a cat named Thistlekit was born in Fieldclan, the only kit to Cloverspur. When Thistlekit was 4 moons old, Cloverspur left Fieldclan and took him with her, saying that there was more opportunity in the east, as a rogue.
Thistlekit was trained by his mother and was never officially apprenticed. When he was 9 moons old he was renamed (now known as 'christened') as Thistlerat due to his long tail and determination. Nothing happened until Thistlerat was 17 moons old, when Cloverspur was mauled to death by a dog. Thistlerat, suddenly a rogue, panicked about until he found another young cat like him named Jules. Thistlerat and Jules hit it off instantly.
Jules and Thistlerat grew close over the course of 2 years, living in the same den eventually. One day, Thistlerat proposed an idea: they start a clan. Thistlerat says that when he lived in Fieldclan, life was wonderful and beautiful, and no cats suffered from starvation or severe illness. Jules agreed, and from that day forward they started Fieldclan from their small tree den.
Fieldclan's growth was slow, mostly from rogues and cats from smaller clans. By the end of Year 5, they had only 4 new members. In the following newleaf,Jules went missing. Thistlerat was very distraught by the loss of his co-leader. From that day forward he dedicated their tree den to Jules.
The group grew excessively after, amassing 15 new members, including 2 pregnant queens. Thistlerat became mates with a cat named Banewillow. They eventually had a litter of their own.
In Year 8, Thistlerat declared their large clan a monarchy. Only him and his kin could become leaders. There are no records or rumors of any uprising, so under noble historian assumption, there was no backlash to his rule. This rule was reverted by Mousetwitch in Year 27.
It is assumed Thistlerat was killed by dogs in Year 12 that were being led by a Pineclan cat. It is unknown what happened in Years between 9 and 12.