Deaf-blind people uses the same language as Deaf visual people uses, except that they communicate in tactile mode.
A Deaf-blind person holds their hands gently on a signer's hands signing.
Julia Brace (1807-1884) is the first deafblind to receive an education in America. She attended "American School for the Deaf, Hartford, Connecticut in 1825 and remained there after her graduation as an employee." (Wikipedia)
Many people are familiar with Helen Keller (1880-1968), an American lecturer, humanitarian and author. She was born on June 27, 1880 in Tuscumbia, Alabama. She later became blind and deaf at 19 months old due to illness in 1882.
In 1887, Helen's lifelong teacher, Anne Sullivan, began teaching Helen how to spell words into Helen's hand. The first word was DOLL when Anne gave her a doll as a present. Eventually, Helen progressed with learning how to speak, read, and write.
Helen attended the Perkins Institute for the Deaf in 1888, then later the Wright-Humason School for the Deaf in New York City (1894-1896), and the Horace Mann School for the Deaf in Boston (1890).
Helen attended Cambridge School for Young Ladies in 1896 and then Radcliffe College in 1900. Upon graduating, cum laude, in 1904, she was the first deaf-blind person to earn a Bachelor of Arts degree.
During her lifetime, she received numerous honors for her accomplishments as well as she had met celebrities. She died on June 1, 1968 in Connecticut.