Kathleen, born in 1922, was the granddaughter of their son Joseph. Ruby (born 1922) was the granddaughter of their son Walter. Ruby was born in the USA as her parents emigrated there in the early 20th century. Kathleen and Ruby never met and I doubt they ever even heard of each other. The photo of Ruby was sent to me by her granddaughter who I met on the internet whilst researching my family history.
I think there is a remarkable likeness between them. Not only features but they both have the thick curly hair of my grandfather Herbert William Tirrell.