 It was completed within a month , during Ingres ' frequent visits to Bertin 's estate of retreat , Le <unk> des Roches , in <unk> , <unk> . Ingres made daily visits , as Bertin entertained guests such as Victor Hugo , his mistress <unk> <unk> , Hector Berlioz , and later Franz Liszt and Charles Gounod . Ingres later made drawings of the Bertin family , including a depiction of his host 's wife and sketches of their son Armand and daughter @-@ in @-@ law , Cécile . The portrait of Armand <unk> his physical resemblance to his father . 
