There is no officially recognized Catholic saint named Liam. The name Liam itself is of Irish origin and is a shortened form of the name William. While there may be individuals named Liam who are considered saints within their local communities, they are not part of the official Roman Catholic canon of saints.
I can find no canonized Catholic saint by the name of Liam.
St. Liam is the patron saint of shepherds and the protection of livestock. He is also known as the patron saint of asthma sufferers.
The only Saint Liam I can find is a race horse by that name so, no, Liam is not a good choice for a Confirmation name
90210 has a character named Liam.
There is no saint named Scarlett.There is no saint named Scarlett.
There is no canonized saint named Madison.
Thgere is no saint named Jenny but there is a saint named Genevieve.
There is no saint named Rae.
Liam doesn't have cousins?
There is no saint in the Catholic tradition named Saint Tatum. The name Tatum is not a commonly recognized saint's name.
There is a saint named Therese and several others named Teresa but I can find no saint named Theresa.