I'm the only child now because my brother passed away 2 years ago
Oh no I'm sorry to hear that!  Technically, though,  "only child" is generally applied only to those individuals who have never had siblings.
Oh, I didn't know that.
Only child
An only child is a person with no siblings, either biological or adopted. 
Children who have half-siblings or step-siblings, either living at the same house or a different house - especially those who were born considerably later - may have a similar family environment to only children, as may children who have much younger siblings from both of the same parents (generally ten or more years).
Overview.
Throughout history, only children were relatively uncommon. From around the middle of the
with her. An example is when someone approaches her at the information desk and says "Excuse me, I've lost my mother." to which she responds "Oh I'm so sorry to hear that." believing the mother to be deceased rather than just lost. She only appeared in one episode of series 1.
Minor characters Bunty Carmichael.
Bunty is a woman who insists on being allowed to perform in a children's majorette team, as there is no upper age limit. Her sketches involve her going