[Facts] Re: I think it's derived from Tierney (m)
in reply to a message by thegriffon
'Our Ti-Arne' was born in 1991 and I've got the first examples of Tiarne in South Australia in 1991 as well, so I suspect it's more that the breeders chose a popular-sounding name for their horse. Also in SA I've got similar names such as Tiarni and Tiarnie occurring from the 1970s.
Here's the quick analysis I posted on Opinions, going up to 1995 (asterisk = in the top 500 that year):
1960 - Tiana
1963 - Tiana
1965 - Tiana*, Tiani
1967 - Teana
1968 - Tiana
1970 - Tiana, Tiani
1971 - Tiandra*, Tian, Tianna
1972 - Tianee
1973 - Tiana, Tiani
1974 - Tiana, Tiarni
1975 - Tiana*
1976 - Tiani, Tiarni
1977 - Tiarnie*
1978 - Tiani, Tiarni
1979 - Tiana*
1981 - Tiana, Tiani, Tiarnie, Tijana
1984 - Tianna
1985 - 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, Tijana
1992 - 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
https://nanowrimo.org/participants/christine-seaforth-finch
http://christineseaforthfinch.blogspot.com/
Here's the quick analysis I posted on Opinions, going up to 1995 (asterisk = in the top 500 that year):
1960 - Tiana
1963 - Tiana
1965 - Tiana*, Tiani
1967 - Teana
1968 - Tiana
1970 - Tiana, Tiani
1971 - Tiandra*, Tian, Tianna
1972 - Tianee
1973 - Tiana, Tiani
1974 - Tiana, Tiarni
1975 - Tiana*
1976 - Tiani, Tiarni
1977 - Tiarnie*
1978 - Tiani, Tiarni
1979 - Tiana*
1981 - Tiana, Tiani, Tiarnie, Tijana
1984 - Tianna
1985 - 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, Tijana
1992 - 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
http://christineseaforthfinch.blogspot.com/