I've got quite a bit of new information for you. I decided to start a family tree to make it easier and have sent you an invitation to it. Here's a link to the start of it:http://trees.ancestry.com/tree/28829722/person/12101702568
Here's the highlights of what I've found.
William Seal was born in Birmingham in about 1878. I'm hoping to get more info on his parents. He went to Hertford County College, a boarding school. He became an engineer and worked in Preston, Lancashire. At some point between 1901 and 1913 he went to Rio de Janeiro where he met Ines Duboscq (sometimes spelled Duboseq). They were married at the British Consulate in Rio on 30 October 1913.
They had a daughter, Ines P, born around 1915 in Sao Paulo, Brazil. She died when she was one years old, in Sao Paulo.
Next we see William and Ines in Nice where Robert Trevor was born in 1916. Then in 1923 Ines filed for divorce in England. You can get all 22 pages of the divorce from the National Archives of the UK but it's a bit pricey. If you want to get it, let me know and I'll send you all the relevant information to get it.
So far I've found no more about William. I'm following a lead that he went back to Brazil and died there in the 1930's or 40's.
I've still not found out what happened to Ines after she came to the US and moved to Rutherford, NJ in 1928. I've got someone who is going to look up and copy the visa she got in Nice for coming to the US. It should have quite a lot of info. It will probably take quite some time for my friend to get it all copied and sent to me but I'll let you know as soon as I get it.
Robert Trevor and his grandmother, Marie Louise Gorge (later spelled George) went to Los Angeles in November 1929. Louise was a governess for a while. I don't know how long Robert stayed in the Maude Booth Home but he and Louise were living together by 1935 in a boarding house Louise was running. They had moved to a new address by 1938. They both applied for US Naturalization. Louise stayed in Los Angeles after Robert moved to Chicago. She died there in 1958 at the ripe old age of 90.
I've been able to trace back some of Louise's ancestry in France. Her mother, Julie Pauline, was born out of wedlock and the father's name was never given. Julie Pauline's mother, Julie, was abandoned when she was a few weeks old and then adopted so no names for her parents.
Louise went to Argentina - not sure how old she was and whether she went alone or with her family. She met a Frenchman named Robert Duboscq and they married in Buenos Aires on 15 Oct 1888. They had Ines there - haven't been able to find if they had any other children but it doesn't look like it. Robert Duboscq died in Paraguay in 1895 - he was only 35. I haven't been able to find his family in France but he came from the Landes area.
I don't know if Louise went to Brazil with Ines - I have a feeling she may have taken Ines and moved there after her husband died. She never married again. Don't know when she moved to Nice.
Of note - when Louise applied for US Naturalization she put all the information about her deceased husband - when and where he was born and died and when they were married - but under children she put "none". So Ines must have died not long after her arrival in the US (or, for some reason, Louise disowned her).
So, a lot of interesting information but still no answer as to why Robert Trevor spent time the the Maude Booth Home. He certainly wasn't an orphan. I did send an email to the Volunteers of America who ran the home until it closed. I'll let you know if I get a reply.