Answer:
When he was an amateur hybridizer, David Austin crossed the Gallica 'Belle
Isis' with the Floribunda 'Dainty Maid'. 'Belle Isis' has small, light pink,
very double flowers and is a once bloomer. 'Dainty Maid' produces single
flowers and is a repeat bloomer. Among the seedlings of 'Belle Isis' x
'Dainty Maid', one, in particular, was outstanding. 'Constance Spry', as it
was named, produced surprisingly large, beautiful, pink flowers. The flowers
were deeply cupped in the Old Rose tradition. In addition, 'Constance Spry'
has a strong fragrance described as 'myrrh'. It was introduced in 1961.
'Constance Spry' had nearly all of the qualities David Austin was trying to
achieve, excellent Old Rose flowers with good color and fragrance, all on a
vigorous bush, but it was once blooming. Since the repeat blooming gene in
roses is recessive, a cross between a once blooming old rose and a repeat
blooming rose almost always produces once blooming seedlings, so 'Constance
Spry' was once blooming. However, 'Constance Spry' was crossed with a repeat
blooming rose, and some of the seedlings were repeat blooming. With these
seedlings, David Austin had what he desired, repeat blooming roses with Old
Rose style flowers and good fragrance. So far, David Austin only had pink
roses.
Isis' with the Floribunda 'Dainty Maid'. 'Belle Isis' has small, light pink,
very double flowers and is a once bloomer. 'Dainty Maid' produces single
flowers and is a repeat bloomer. Among the seedlings of 'Belle Isis' x
'Dainty Maid', one, in particular, was outstanding. 'Constance Spry', as it
was named, produced surprisingly large, beautiful, pink flowers. The flowers
were deeply cupped in the Old Rose tradition. In addition, 'Constance Spry'
has a strong fragrance described as 'myrrh'. It was introduced in 1961.
'Constance Spry' had nearly all of the qualities David Austin was trying to
achieve, excellent Old Rose flowers with good color and fragrance, all on a
vigorous bush, but it was once blooming. Since the repeat blooming gene in
roses is recessive, a cross between a once blooming old rose and a repeat
blooming rose almost always produces once blooming seedlings, so 'Constance
Spry' was once blooming. However, 'Constance Spry' was crossed with a repeat
blooming rose, and some of the seedlings were repeat blooming. With these
seedlings, David Austin had what he desired, repeat blooming roses with Old
Rose style flowers and good fragrance. So far, David Austin only had pink
roses.