In the context of this artwork, explain the Anton Mauve of the Family.

Anton Mauve was married to Vincent's cousin Ariëtte (Jet) Sophia Jeannette Carbentus and was a major influence on the artist. He is mentioned directly in 152 of Vincent's surviving letters. Vincent spent three weeks at Mauve's studio at the end of 1881 and during that time he made his first experiments in painting under Mauve's tutelage, first in oils and then early the next year in watercolour (previously he had concentrated on drawing). Mauve continued to encourage him and lent him money to rent and furnish a studio but later grew cold towards him and did not return a number of letters.In a letter to his brother Theo dated 7 May 1882, Vincent describes "a very regrettable conversation" in which Mauve told him their association was "over and done with" adding by way of explanation that Van Gogh had a vicious character. Vincent continued his letter by expressing his sorrow and then defiantly launches into a defense of his relationship with Clasina (Sien) Maria Hoornik, a pregnant prostitute he had befriended.
Theo Anton Mauve Vincent's surviving letters Clasina (Sien) Maria Hoornik