Background
Born in Camberwell, London on 9 April 1832, he was son of Henry Collingwood Aumonier, a jeweller, by his wife, Nancy Frances, daughter of George Stacy. A younger brother worked as an engraver, and a nephew Stacy Aumonier became a landscape painter and decorative designer.
Education
He attended the evening classes, first at the Birkbeck Institution, then known as the Mechanics" Institute, and subsequently at South Kensington, where he found employment as a designer of calicoes in a London firm.
Career
He was brought up at Highgate and High Barnet, and at 14 was placed in a business. In 1891 Aumonier visited Venice and the Venetian Alps. He also received a silver medal at the Brussels exhibition in 1897.
An exhibition of his water-colour drawings was held at the Leicester Galleries in 1908, and another of his work in oils as well at the Goupil Gallery in March 1912.
Aumonier died in London on 4 October 1911, and his remains were cremated at Woking.
Membership
He became associate of the Royal Institute of Painters in Water-colours in 1876, and was one of the original members of the Institute of Oil Painters.