I recently purchased a bunch of older photos. One photo shows four people with a horse. On the reverse is written "Left to right, Mrs. J Austin du Pont, President of Welsh Pony Society of America; Mrs. Sidney S. Sweet, secretary of Welsh Pony Society of America; Joe Varni, President of Welsh Pony Association of California; Loren Kerr of Camby Oregon. The pony is Revel Rally, registered Welsh mare of Stradan's Welsh Pony Stable of Elk Grove (California)". The photo was taken in January 1963.
Attached is a copy of the photo. If this is one of your ancestors, please contact me.