I don't know if Ralph Higgins had a brother, who was named Robert Higgins. All I know about Ralph Higgins is that his full name is Ralph Lambert Higgins and that he was married sometimes in the year of 1912 to Louisa Emma Parker, who was the daughter of William George Parker and his wife, Emma Russell Parker. Ralph Lambert Higgins was the brother in law of Amelia Neuve Parker, who was a sister to his wife, Emma Louise Parker, and Amelia Neuve Parker was married to Thomas W. Fanning. I know that Ralph Lambert Parker and his wife, Emma Louise Russell Parker, had no children before 1914. And Ralph Lambert Higgins was alive in the year of 1964. This is all the information that I know about Ralph Lambert Higgins.
It is very possible that Ralph Lambert Higgins had a brother, Robert Higgins, who was the husband of Mary Ellen Travers, and lived in West Brisbane. Ususally people with the same surname are related, if Robert Higgins is not a brother, he might be a cousin.
Thank you so very much for replying to my query, I certainly appreciate it very much, kitty