Louis is listed in the 1881 Port Hope census returns, living with his widowed daughter, Emily Julia Masters, and three of her children:
In 1886, a year prior to Louis' death, Emily married widower Peter Robertson, whose wife, Sarah Whitt, had passed away in 1861, leaving him with at least three children.
From the 1891 Port Hope census returns, it would appear that Emily's mother - Julia McGraft - was of Irish origin:
In the 1901 Port Hope census returns, Ida appears for the first time, living with her sister and family:
...and then the fun began!
On 04 May 2005 we received a rather unusual e-mail request from Andy Clark:
I am researching the history of the Flea Circus and a Mr L. Bertolotto, who is said to be the first performer of a flea circus in the world. I spotted a reference to a Mr. Bertolotto at the following site of yours and the age would be about right, as Mr. Bertolotto has been recorded as performing in London (1833), New York (1835) and Toronto (1844).
Relishing a challenge, I, and Port Hope Archives archivist, Krista Taylor, began corresponding with Andy, gleaning further information - and vastly enriching our previously-scanty knowledge of flea circuses!.
Unfortunately, the flea circus magnate only seems to appear as 'L. Bertolotto', with no full given name nor personal history. This creates a problem, but it helps that the surname isn't a common one. There are only two Bertolottos listed in CemSearch (Ida and Louis) and only one in the online 1880/81 census returns for Britain, the US and Canada (Louis).
Andy turned up an important item, in the form of a marriage registration. On 05 Mar 1850, in the Parish Church, Parish of St. George, Hanover Square (London), widower Louis Bertolotto, servant on Eaton Square, married Mary Ann Stringer, spinster on Eaton Square. Hanover Square is located just around the corner from Regent Street where his shows were held. While it might have been a different Louis (occupation as a ‘servant’ and also the couple have the same address), Eaton Square mentioned on the certificate is also not too far away, just around the corner from Buckingham Palace.
So, what we now know:
Another item of interest:
...and how can you help?
Emily's Will gave her children's names/locations...
... and while some remained in the area, others are widely-scattered.
If you have any knowledge as to the present location of the enlarged pictures mentioned above, please get in touch!
...and should you be interested in learning more about the fascinating world of flea circuses, a visit to Walt Noon's amazing site - www.noonco.com/flea/ - is a must!

These three monuments (left to right) in Port Hope Union Cemetery mark the graves of Ida Bertolotto (1859-1925), Emily Julia Bertolotto Masters Robertson (1829-1916) and Louis Bertolotto (1802-1887). The three plots are part of a ten-grave lot purchased by Emily c1887. The other plots are occupied by Joseph Henry Hugh (1856-1916), Emily's daughter, Emily Louise Hugh (1853-1925), Edward William Hugh (1878-1949) and Joseph Hugh (1892-1892).
As shown in his obituary, Louis Bertolotto was born in Genoa and emigrated to Canada in 1856, as steward to Sir Edmund Head, Governor-General of Canada. According to the cemetery records, Ida - Louis' daughter, was born in Quebec during this time (c1860).
Emily Masters (47) born England, widow
Kate Masters (20) born Ontario
Harry Masters (17) born Ontario, printer
William Masters (15) born Ontario, photographer
Louis Bertolotto (80) born Italy, gentleman, widower
Robertson, Peter (68) born Ontario, father born England, mother born Scotland
Robertson, Emily (57) born England, father born Italy, mother born Ireland
Robertson, Peter (38) born Ontario, father born Ontario, mother born England
Robertson, Peter (78) Head of household, married, born May 16, 1822
Robertson, Emily J. (68) Wife, married, born Mar 24, 1833, Eng., emigrated 1856
Robertson, Peter J. (48) Son, single, born Jan 10, 1853
Bertolotto, Ida (42) Sister, single, born Mar 7, 1859 (Incorrectly has her as sister of Peter, born Ontario, but emigrating in 1856!)
Could you point me at any resources that would allow me to confirm that your Bertolotto is the Flea Circus performer?
The 1851 Chertsey, Surrey (England), census lists an Emily Louisa Bertolotto (22); unmarried; born Datchet, Bucks. c1929; employed as a governess at the home of Isabella Norton
Is this another daughter of Louis, or perhaps an error in reporting Emily Julia?