At present, the Aglio story starts in 1777 with the birth of Agostino Aglio in Cremona, Northern Italy.
His father, Gaetano Aglio, was a significant person working in Milan as an lawyer and known to the various Holy Roman Emperors. His mother was Anna Maria Mondini. 
Because of his connections Aglio obtained the best opportunities for education in Northern Italy and his knowledge and talent opened doors to an interesting career leading to his arrival in England in 1803.

In 1805 he married Letitia Clarke at St. Anne's Soho and they had 3 children, Augustine, Mary and Emma 

Augustine Aglio, the son on Agostino,  married the sister, Margaret, of John Absolon and they had  3 daughters , Letitia, Marian and Mysie.
The three Aglio girls.
Sadly a son, Augustine Joseph, died at 1 year.

Not only did Augustine marry John Abosolon's sister, he ran an photography studio with his brother, Hugh Wolfgang de Mansfield Absolon

The relationship between the Absolon, Aglio and later the Dibdin family can be seen in the article
More details in A Dynasty of Artists.  

There are records that indicate that the family name derives from the  name Aelius and there are  copies of several crests

Details

Letitia Clarke 
was born on 15th November 1783 the daughter of Robert Clarke and baptised at St. Benet in Paul's Wharfe London

Bust of John Clarke Cousin of Letitia
or maybe her father 

Passport from Aglio's work in Europe.

In about 1820 Agostino travelled around Europe to draw copies of documents that were taken from Mexico. His work was published as seven volumes on Mexican Antiquities.

AGLIO HOMEPAGE

First Aglio Scrapbook probably assembled by Augustine 

Some Early Aglio Documents