You inspired me to do some research, using the South Australia baby names data set which is the most complete for any Australian state. I only looked up to 1995, but it's still being used as far as I know.
Tiana starts showing up on 1-2 girls per year intermittently from 1960, and gains variants from 1965. In order of popularity, here are
Tiana and its variants by year. Asterisks show names that were in the top 500 that year.
1960 -
Tiana1963 -
Tiana1965 -
Tiana*, Tiani
1967 - Teana
1968 -
Tiana1970 -
Tiana, Tiani
1971 - Tiandra*,
Tian,
Tianna1972 - Tianee
1973 -
Tiana, Tiani
1974 -
Tiana, Tiarni
1975 -
Tiana*
1976 - Tiani, Tiarni
1977 - Tiarnie*
1978 - Tiani, Tiarni
1979 -
Tiana*
1981 -
Tiana, Tiani, Tiarnie,
Tijana1984 -
Tianna1985 -
Tiana*, Tiani
1986 - Teanne,
Tian,
Tiana,
Tianna, Tiannah
1987 - Teearn, Tiane,
Tianna, Tiarnee
1988 - Tiahne, Tianah, Tianie, Tiarni-Rose
1989 -
Tiana*, Tiarna*, Tiahni
1990 -
Tiana*, Teana*, Tiahna, Tiani,
Tianna, Tyana
1991 - Tiarna*,
Tiana*, Tiarne*, Tiahna, Tiahne, Tianne, Tiarn, Tiarnee, Tiarni,
Tijana1992 -
Tiana*, Tiarna*,
Tian,
Tianna, Tiarni
1993 -
Tiana*, Tiarne*, Tiahna*, Teanna*,
Tian, Tiandra, Tiarni,
Tijana, Tiahn
1994 -
Tiana*, Tiarna*, Tiahna*, Tiarne*,
Tijana*,
Tian, Tiarn, Tiahn, Tiahnie, Teearna
1995 -
Tiana*,
Tianna*, Tiahne, Tiahni,
Tian, Tiarna,
Tijana, Tearna, Teeyarnna, Tyana
I stopped at 1995 because I was running out of steam, but you get the gist.
Tiana clearly led the way (probably influenced by
Tina and
Tia, which preceded it, and the various -tiana names which were not uncommon amongst the post-war immigrant groups in Australia). The plethora of variants came later but clearly followed where
Tiana led.
I've known a few with various spellings, and I'm nostalgically fond of it although I probably wouldn't use it.
https://nanowrimo.org/participants/christine-seaforth-finch
http://christineseaforthfinch.blogspot.com/
This message was edited 4/18/2021, 8:41 AM