Kathleen (Kate) Stonor was born around 1873 in Brighton, Sussex.

Kate married Harry Hemsworth in 1893 in Steyning, Sussex.

She had the following children from her marriage to Harry Hemsworth:

- Kathleen Alice Hemsworth	born in 1894 at Steyning, Sussex.
- Leslie Alfred Hemsworth	born in 1900 at Brighton, Sussex.
- Reginald Cecil Hemsworth	born in 1906 at Cuckfield, Sussex.

Kate died when she was 49 years old, in 1921 in Uxbridge.