Good to meet you Emma.
I will collaborate with mum and Elsie's daughter Jill and see what we can get to you. Doris did marry Jack (John Francis)McCosker and spent all her married life at Cherry Tree Hill. I believe she was born on a property called Bendingle near Buckulla, between Ashford and Inverell. Elsie married Jack's brother Cecil who was known as Mick and spent her Married Life also at Cherry Tree Hill.