In the spirit of checking, checking, more checking and then checking the checks, I have discovered a couple of things.
Edwin Louis, who died of injuries after a fall from a horse, had one son, Harold Edwin, a butcher by trade, who married and went on to have at least one son. Harold Edwin and his wife Ellen Weston lived at Seventeen Mile Rocks Road from at least the early 1950s to 1972.
Victor Louis and Sarah Ann had their first son in 1882, in Sydney, but he was stillborn. I have come across information that indicates but not confirms that the other son, who died in 1900, might have been born in 1886.
Slowly, slowly, it grows.