The patron saints of children are:
Bathild
Gabriel Gowdel
Gerard Majella
Infant Jesus of Prague
Maria Goretti
Nicholas of Myra
Niño de Atocha
Pancras
Philomena
Raymond Nonnatus
Solange
Symphorian of Autun
Trophimus of Arles
Vaast of Arras
I see no specific saint for healing of children. However, St. Brigid of Ireland is considered as the patron saint of healers.
As per the Patron Saint Index, William of York is a saint but not currently a patron saint.
There is no patron saint of bullying or against bullying.
Saint Valentine of Rome is considered a patron saint of lovers.
Yes he is the patron saint of repented thieves.
There is no patron saint of children's health but the Infant of Prague is the patron saint of good health.
The patron saints of unborn children are Saint Joseph and Saint Gerard Majella.
Saint Nicholas of Myra is the patron saint of children, scholars and penitent thieves as well as a number of other causes. For a complete list of his patronages, click on this link.
As per the Patron Saints Index, the patron saints of unborn children are Saint Gerard Majella and Saint Joseph.
The patron saint of love is St.Valentine. St. Valentine of Rome is considered the patron saint of those in love.
He is considered as a patron saint of Ireland.
Saint Ivo of Kermartin is often considered the patron saint of judges because of his reputation for justice and fairness in settling disputes. He is also known as the patron saint of lawyers, abandoned children, and Brittany in France.