Hi Scallywags
Re.... "Margaret Tranquille of Long Jetty who died in 1946, is Catherine's sister
I have come across a birth record for Teresa M Harris born 1862 to John and Mary Harris and wondered if this may be Margaret.
Also Mary Harris born 1859 to John and Mary Harris."
Catherine , Mary Ann and Margaret HARRIS, were in the Benevolent Asylum, as young girls in the 1860's.
1154/1862 HARRIS TERESA M JOHN MARY SYDNEY
This birth, could well be Margaret HARRIS. The age fits.
It might be a good idea to purchase that birth certificate, and see what "previous issue" are listed. Hopefully, Catherine and Mary Ann, are listed. You will also get the details from that certificate, of the girls' parents.
Mary