Portriat of a noble child with parrot was executed in by important and high listed Itlian painter Luigi Biagi ( 1810 - Florence - 1882). 
Full biography see in Tlian on following link from on-line wikipedia:

https://it.wikipedia.org/wiki/Luigi_Biagi

Literature: on-line wikipedia in Italian.

Inscription: signed and dated 1852 lower left.

Technique: oil on canvas, original period Florentine hand-crafted and gold-plated wood frame. 

Measurements: unframed w 17 7/8" x h 22 1/2" (45,5 x 57 cm), framed 27 1/2" x 31 7/8" (70 x 81 cm).

Condition: painting is in a good condition, original period frame have minor signs of the age.