Pete,
Thropton RC
Gallowfield. Born on 28 April 1812, baptized 29 April 1812, Anna Luke daughter of Edwardi and Anna Luke, formerly Donaldson. Godparents Andreas Robson and Margarita Robson.
Its in Latin, I think it will be the right one.
In 1841 census in Thropton, there is an Edward Luke, Molecatcher, aged 60, also Walter Luke, aged 20 in same household.
In 1851 census in Thropton, Walter Luke is aged 30, Molecatcher, born Thropton, and has an Eleanor Lisle aged 13 living in same household, presumably a Niece.
Also from Thropton RC, lots of other Luke baptisms, including :
Gallowfield - Thropton. Born 1 march 1821, baptized 4 March 1821. Gualbertus, son of Edward and Anna Luke, formerly Donaldson. Godparents Joannes and Margarita Robson.
Again its in Latin. This will be Walter, he's Walter in the index at the back.
Alan.